The petition is great, but it specifically addresses the situation at USM in the early part of the year. Does a new one need to be written which only addresses the probation and drop in tier status? Just asking.
Sounds like a good idea; you may actually get a lot of new people signing up -- such as students and parents and alumni who didn't particularly care about professors being fired but don't like the thought of the university losing its accreditation (and thus their degrees losing their value).