Blodg, I don't use a back tension release, but I shoot my release with back tension to pull the trigger. Works great! Slapping at a trigger or slow pulling a trigger can cause you to move the bow off target, as you know. I wouldn't change a thing if I were you, you have the cleanest form of release going. But if in the off season you want to play. Put your finger on the trigger and tighten the the muscle and the arrow is gone. Now I am using a Martin Quick Silver release[way old], I had to set the trigger with a very light pull to get it to work right. But it works for me.
Gselkhunter