Hi TCB,
Mine used to get stuck in my irregularly shaped pool as well. Shortening the hose so that it's 1 length (4 ft I think) longer than the longest distance from your suction end to the other end of the pool is one thing that may help. In my case, I noticed that I hadn't adjusted the suction "power" enough and it was sucking way to hard, so if the Barracuda gets stuck and on top of it is sucking too hard to the bottom it will be harder for it to shake loose with the vibrations of the hose. The Barracuda comes with that see-through plastic piece with a black (or red?) "flap" on a spring, make sure to attach it at the end of the hose where the Barracuda goes and measure the suction, and that it falls within the recommended level. Then adjust the opening on the plastic part that goes into the skimmer or vaccuum port.

As for going forward when it gets stuck - no, it only goes backwards.

HTH
C