For me, the joyous, high side is just as dangerous as the depressed, hopeless side. At either extreme, I feel as if I "deserve" a little break from the battle.
Please PM me for more specific thoughts on how "moods" and mood swings can influence this GYE work, but I'm convinced it plays a big part. I'll repeat: on the up side and the low side.
But how it gets to the point where I feel I "DESERVE" anything in life, and certainly anything that H' considers distant from him (i.e., aveirah), well that's a deeper question.
So anyhow, I don't think it's so strange at all that elation can lead to acting out. PM me if you want further details or thoughts....