I don't even bother in Huttball if there is a level change. It goes off, I have LOS, the CD triggers, and the ability is "used", but I can't pull back because of LOS. Client/server lag, obviously, but is this intended? It might well be, but I'd like to get clarification.
If the Devs say this is sanctioned behavior, then it's not an exploit. Feel free to complain about it (I've never done it on my PT, frankly), but do not call it an exploit.