Blackjack

Played a bit of Blackjack at Mohegan. Had fun. The Buffet at Mohegan is REALLY good and only costs $15. Was totally even after all the play.. and my friends wanted to leave... So I put the whole thing down on one hand. First card is a 3. Boo. Second card is an 8! WOOO! Dealer is showing a 9. I take a hit and get a 8. Ok. 19. We will split. Should I let it ride? Dealer turns over the down card and it's an Ace! NOOOOO!