I have seen this a few times before when folks brought me bows that their local shop set the rest either way in or way out. In all cases the culprit was a stretched buss resulting in cam lean that caused the string to hit the supressors on one side of the V block first either top or bottom causing huge arrow kick.

This has come about now because of the cable/string stretch that just got bad enough for this to happen. I will bet a nickle you will find this to be the case. The string is hitting one of the Supressors out of synch. As you can all imagine, this will cause a big "Kick" of the arrow.

Torguing will cause and certainly will amplify this. I disliked the dual VBlock supressor system for this reason. A single STS is IMO much better.

Diagnosing is sort of difficult. You may see where the string is hitting the side of one of the V Blocks (this is how I caught it the first tiime) OR you can spray some Athletes Foot spray on it and see where it scrapes it off.

Treatment of course is twisting one side of the cable to offset the lean

Good Luck,

Dryridge