Great pics. I was over there a couple of weeks back and made a right turn instead of a left at the intersection of Forest Road 088 and Beef Basin Road. It took us into some really cool terrain in Manti La Sal NF (green grass, aspen, etc). We eventually made it back into Beef Basin, but I think it was the long way. We ended up driving down some really shady and narrow roads.
I assume that you guys followed the highlighted line in the pic below?