Per BJ Evans, Tyrus is out in the neighborhood of two months with a left calf strain and a muscle tear.

B.J. Evans (@BobcatsBballPR)
11/19/12, 4:23 PM
Injury @bobcats update: Tyrus Thomas to miss approx. two months w/2nd degree Lt calf strain & tear of plantaris muscle. No surgery needed.

Looks like Warrick will get a boost in playing time for the foreseeable future.