Is that the stock Helix? And Stock Secondary spring? If it is...I'd get rid of that immediately. Put in a TP Orange Secondary spring, or Dalton Black/orange Secondary spring, and a Dalton Helix...with some Heavy Duty Rollers and that may help your problem? Cuz that's a time bomb for belt blowing right there in that video.
Is that stock exhaust Mr. Big ?
Looks normal to me, I don't think the secondary can push the belt out unless it's turning.