I wasn't thinking of going into deco, but I think I see your point and my error.Apples and oranges. If on-gassed to over M0 at 130', then your computer told you you're in deco and the 20' stop is mandatory. Then you'll be off-gassing there.
Slow tissues load SO slowly that it's not the deeper dive followed by safety stop at 30' that gets you, it's the buildup of time at shallower depths. On the deep dive, it's the fast tissues that get you.