Those are good points. I've always done something similar when xc-skiing. Last winter I had to deliberately bail near the bottom of a very icy, steep hill at 25 mph because some fool stopped about 10 yards in front of me while I was on my way down. I wound up sliding about 50 feet on my side off the track on the ice and would up with a lovely bruise on my right hip. Normally I would have just stepped out of the track and skied around her or done a hockey stop but the trails were solid ice and the only alternative was to bail and use my body to stop.
The guy who was leading the party was rather upset that I had to crash.. He asked .. "Are you alright ?" I told him "Nothing that I haven't had to do before"
He started lecturing the offender after the fact... oh well.
Landing on the bike is a little different. I've always wound up unclipped with a not so soft landing on my side with my head tucked in.