So I have a very different understanding of coaching contracts in general and specifically what a "buyout" means.
Here is my understanding. Virtually all coaches have guaranteed contracts, so they get paid no matter what. And they get paid on the same schedule as the contract called for when they are fired. Meaning if there are 3 years left on their contract when they get fired, they collect three years pay over three years (but see next sentence). Most all (but perhaps somewhat less than above) contracts have "offset" clauses or language that reduces the amount they get paid after being fired by any amount they earn during the remaining period of the contract. So sticking with example above, in year 1 after firing coach doesn't work, he collects full pay that year from old school. Year 2 and 3 he is an assistant somewhere else for half as much as his old contract called for, the old school pays him the other half each year. But coach ends up with full amount of the contract he signed (albeit some coming from his new employer). Some coaches (especially if they have offset language) will, at the time they are fired accept a "buyout" for less than the full amount, but there is rarely a clause in the contract that allows the school to do it unilaterally. Coaches will take this because they may believe they can get paid more in total this way. Let's say they think they can get a new job that pays basically the same their old job (think of a coach leaving a smaller school as Head Coach to return to a big school as an assistant after he failed as the head guy). If they just do that, they make the same pay either way, but the new school pays it all. If they get agree to a buyout, they get cash from old school and same pay from new school - - - more in total. Old school may do it because it lowers their exposure to paying coach the full remaining amount (i.e. if he doesn't find (or doesn't even look for a new job). his "buyout" will be for less than the full amount still owed.
Very few coaches have (or would in any way allow) any clause in their contract that provides that upon termination they can be "bought out" for less then the full remaining value of their contract. There are some (and in these instances these contracts do not have offset language) that have clauses that provide on termination they get paid the full remaining amount in one lump sum upon termination (perhaps adjusted for time value of money) but its rarely if ever for less than the full amount owed (although they may at the time of firing AGREE to be bought out as discussed above).
"Buyouts" in coaches contracts (and especially NCAA men's basketball and football) usually refers to the amount the COACH must pay the school if he leaves early! Many, but far from all, contracts contain these buyouts and the amount of buyouts (and the relationship to annual pay or even total contract value) varies widely. This is considered the quid pro quo for getting a guaranteed contract is that you can't just leave in the middle of your guaranteed contract "scot-free". Generally the new school will indirectly pay this by giving the coach they are hiring an amount (as a signing bonus or similar) what he needs to pay the buyback to the school he is departing (and taxes will complicate this situation a good deal). In practice, this buyout clause has become a way for schools to lessen the sting of losing your (successful) coach to another school and to make that other school pay! Coaches (and especially their agents) , however, do not like these buyouts because a school looking for a new coach might consider the presence of a buyout (or the amount of it) a detriment to hiring that coach and not consider a coach with a buyout (or too big a one). These buyouts are often added to contracts when the coach gets a big raise/extension new contract. And some coaches don't mind giving them because they actually like helping out their old school if they should ever choose to depart.
All of this and whats included and what isn't and what it specifically provides is a simple matter of leverage. Who has it and how much?
So I have read many contracts across a variety of sports (professional and college) that have some or all of these provisions. I have never seen a single one that contains a "buyout" that allows the school to pay the coach less then the remaining value of the contract! I have seen deals that attempt to limit the school's exposure to having to pay the coach when they fire him but these are generally structured as one year renewable contracts (or something similar) with a series of school options that also include a notice period or "severance". So with these, coach signs say a "5 year deal" that is actually a 2 years guaranteed deal with 3 one year annual renewable (at schools option) extensions and provide the school must provide, for example, 1 years notice of their intent not to pick up an option. So, when coach is fired after Year 2, what actually happens is he is given notice that school does not intend to pick up his Year 4 option and he still gets paid for Year 3. Thus the "five year deal" is effectively only a three year guaranteed deal. Terms and provisions on these deals vary widely!
All that said, I have not read Moon man's contract, but if I were a betting man I'd say he has a fully guaranteed deal that insures full payment of all remaining years, but also includes offset language. I doubt seriously if there is any way UR gets out from under the full obligation based on anything in the contract. And he almost certainly has a buyout that gets Richmond paid if he leaves for another job (officially by CM, but in reality by the school that hires him).