I'm the LD and was acting TD for this.
After reading over this discussion, I thought I'd comment.
Obviously it would be better if interlock was disabled. But playing in a home-based league, that may not happen, or even be possible. Regardless, it wasn't the situation we found ourselves in, so had to deal with it as it was.
In this situation, the stuck ball was not giving the player an advantage, so I think I"d make the same call again - basically calling on paragraph 10 (I now know). To me it seems ludicrous to disadvantage a player for a stuck ball that's not affecting game play.
What I didn't do, but now realize I should have, was to give him a choice of getting rid of the stuck ball right then (and lose MB) or do what we did - continue 2b MB until down to 1 ball and them have him shoot scoop to clear the stuck ball. But with the warning that if he gets a double drain or drains while shooting scoop, turn is over. I didn't give that warning and probably should have.