Back Squats with Straps

[22s]

Can anyone give an indicator why this guy is doing back squats whilst holding straps attached to the bar? http://youtu.be/nG-TNlwlPkA?t=2m10s

I've heard of people using straps for front squats as they lack flexibility, but not back. Usually I would dismiss it as another chump doing something wacky, but the guys at Cal Strength really know their stuff. Only thing I can thing of is that the guy is injured...

[smiffy180]

Perhaps to replicate a safety squat bar? http://youtu.be/2bkidbmb8Tk

Not sure tbh

[Xerstead]

Possibly a shoulder injury preventing him getting his hands back far enough to grab the bar.
Or just trying something different.