2009 Keystone Raptor bedroom slide stuck in closed position

I made a four hour trip yesterday, after closing the slides, got parked and leveled and the Bedroom slide wouldn't extend. I looked closer and 'think' it got stuck on a partially opened closet door. So I stuffed the clothes back into the closet, shut that door and tried the slide again. It will 'click' and tries to extend an inch or two, but that's it. It will retract back that inch and click again. I had someone press the button for me while I tried to 'help' it to extend, but haven't had any luck.

I'm don't even know where the mechanism can be accessed. This is the front bedroom slide on the driver's side. The closet door that may have been jamming it from extending is the one all the way in the front of the RV.

Any help would be appreciated.