After a little snooping, I found out that Carlton Jackson took over first-string at quarterback.
He is poised to start Sept. 1 against Army.
After practice, J.D. Brookhart said he's not opposed to a semi-platoon, where the backup (which now appears to be Chris Jacquemain) gets a couple series per game. He also remained open to changing that decision upon future performance.
I am about 90 percent certain that this information is accurate. Brookhart told me he would decide tonight, which apparently wasn't the case. I will confirm it tomorrow at practice.