2010 could indeed be disastrous for the Gators. Tebow will be gone. Add to that the fact that we may see another mass exodus of the defensive players going to the NFL or graduating (similar to what we saw after the 2006 season). I think as well, given that and given the success of the past year, you might see guys like Demps leave early.
It is not inconceivable that between seniors graduating and people leaving early to the NFL, Florida could be left with a shell of its current team.
A huge step backward is certainly possible, if not likely.