[adanthar]

I go one step further and just check the turn, although I'd bet it HU. The 8 is the worst non-spade that could have hit and you're now dead, tied or getting freerolled by anything that calls. About 1 in 5 times that everyone checks, you lose the pot by checking, but when something cool happens (like UTG bets and the other guy raises, or when you're bet into hard and can dump the hand) it basically pays for itself.

Also, I would tend to CR the flop and try to get all in against the naked ace or at least play a nice big pot that I can push him off of on the turn. I slow way down once I get two callers, though.