ATO will always be on top, simply because it's ATO. They'll keep getting the same kind of guys, regardless of any social suspensions.
I had forgotten that Delt lost their recruiting priviledges for a couple semesters. Why was that anyway? It might have been before you got to UF though.
ETA: Delt has been participating in IFC rush for at least the last three semesters.
You're right, that's before I got to UF. I'm fairly certain that this last spring was their first spring class in some time... but then, I haven't paid that close attention to them.