The spin is an aerobatic manoever. Personally I think "spin" training per se is a waste of time. If you really want to move to the next level of flying skill then you should IMO take an introductory aerobatics course. True comfort in the air comes when you realize it doesn't matter if the airplane is upside down or pointed straight up it is still perfectly controllable.
I also think that instructors who have not had aerobatic training should not be allowed to conduct spins. There is just to much that can go wrong in a botched spin entry/recovery and somebody with no aerobatic training will not necessarily recognize a bad situation developing or know what to do........