Koli - not at all an expert, just enthusiastic!!
You are flying a +ve maneouvere, as ZA says the slats in the Tiger are locked before looping, if fitted, not sure about the Rallye.
ZA says, if slow and wobbly it could be an inverted spin. What I believe he really means is a positive spin entered from the inverted. Top of a loop the stick is well aft of neutral and unless you "grossly" mishandle the recovery, it will not cross-over and go negative on you. But if you do that can be a wild ride, I speak from experience!