So, I ended up doing some wheeling at the Pismo Dunes this past Saturday.
At the end of the day, the passenger seat belt was not able to be extended (and buckled) it seems like the mechanism is stuck... on Sunday, the same thing happened to my drivers side belt... it worked again later that afternoon, but then again became stuck...
Had the top and doors off... obviously sand got a lot of places. I took the plastic side off and inspected the belt retractor, but not that much sand was found on/in it...
I have been able to find a post in another forum talking about some ball mechinism that knows when you break hard and will lock the belt... and that if sand/dirt/etc gets in the tube it can keep the ball in the stuck position...
Anyone else have this issue? Any ideas on how to fix it without disassembling the whole mechanism? I've heard hitting it with a rubber mallet may fix the issue...
Thanks in advance for the help guys! (fyi this is a 2007 2DR Sahara and the rear belts work fine still).

NOW Works!!!
(I used to be able to) oh well, it works!