I don't think the decision can be appealed, they'd have to request a reevaluation and prove all deficiencies were addressed (so an appeal doesn't really make sense in this context, I guess).
What's interesting is that if a site visit happens in June and they do fall to terminal accreditation...could mean they can't start the c/o 2029 based on this: "To maintain terminal accreditation status, the college must: immediately cease enrollment of additional students; commit adequate resources to complete the education of currently enrolled students..."
So it could all be down to timing of when students actually enroll in classes I guess, if they are being that literal? I have vague memories of not actually enrolling for my first semester at Illinois until mid to late summer despite being accepted in March (my memory may be failing me here, though), so if that's similar for Tuskegee, this implies that 2029 could be screwed. What about waitlisted students that make it off the list in July, so would enroll later? This is uncharted territory honestly, I don't believe any US vet school has ever fallen to terminal status before. If by enrolling they mean starting classes, then it's even more likely that c/o 2029 wouldn't get to start classes if Tuskegee dropped down in June. Not trying to incite panic, but this is how it's reading to me.
Would be worth watching Cambridge from afar and seeing how RCVS handles things too, if their drama unfolds before Tuskegee's. Last I read, their last accreditation visit was pretty abysmal (failed something like 2/3 of the criteria)