I still don't think Grant is a great defender or rebounder, but...this discussion got me thinking a little more.
I looked back at last year's stats. Grant averaged 7.1 rebounds per game (31.5 mpg). This year he is also at 7.1 rebounds per game but in 6 less minutes per game (25.4 mpg). So on a per minute basis he is actually grabbing more boards this year.
Second, I checked KenPom to see how much our team has improved defensively since last season. Last year we were an atrocious #287 out of 353 on defensive efficiency. This year, we are a much more respectable #98. I'm sure this can be chalked up to a number of factors (change in defense, addition of Blake, Tyler, etc.). But I have to think we would not be a top 100 defense without Grant having improved some.
I've seen all but a couple games of his career and I'm still pretty confident he's still not a plus defender. But I think at a minimum he's not a huge liability on that end of the court right now.