... There could be a price, yeah. If the safeguards fail, there could be a rebound of energy. I can't say for sure it's exactly safe for me, but at this point... I would rather make the jump than wait for Lucifer to get strong enough to take over again.

[Besides, Sam thinks he's a very minor sacrifice in the grand scheme of things.

It's all the self-hate. Really makes him fine with jumping into a pit, metaphorical or literal.]

It's at least self-contained. Whatever happens, it's a small enough scale that it won't impact the rest of the town.