It always seems like winter conditioning is the time when most of these incidents occur. I presume the combination of less structure to the workouts with normal seasonal depression creates more opportunity for incidents to crop up. Now might be a good time for team leaders to call a meeting and get everyone on the same page that this type of stuff is not acceptable.
In the meantime, I presume that the policies from 2006 are still in effect, where the penalties are all spelled out. If I recall the first UAC is couple games suspension, and a second one means taking a year off from both football and the University.
The team really needs Vick, Patterson, Johnson, Powell, Purdum, Jones, Wells, McQueen, Lucas, Tautuiaki, Layton, Bass, Dixon, etc. to decide what kind of year they are going to have. Carpenter getting another year would really help. Seniors who take ownership of their team make all the difference.