I forgot to mention that I did my forward ukemi from standing last night and it went quite well. No hurt shoulder! I even got less head contact with my backward ones.
I woke up this morning with a revelation about my standing guard escape. I did it twice while rolling with with Mr. Rebar-for-Ligaments, and the first time, he caught my right arm and wouldn't let go, so I couldn't pass his guard. The second time he didn't and I was able to pass. I thought he did it just to keep me from passing, but I realized that he did it because I made a mistake and didn't bring his right arm far enough across his left. Love it.