He hasn't been cleaning recruitment topics. The reason it looks like he has is because of the bump button. Whenever a topic is bumped, the final reply (often Dbz's, with a message saying 'Cleaned') is turned into a recent reply, looking as if Dbz just posted.
Although this declaration wasn't made on TIF, I'll give you the benefit of the doubt: someone from TDM would've complained by now if it wasn't (plus, Ninane as present). Mori, 187; TDMWL, 50.