Scenario: New player trying to learn, sitting in with the regulars yesterday before the Superbowl begins. Knows the basics of play, but not the "mechanics" of NLHE as far as the details of play.
He shuffles and deals everyone their hole cards.
I'm sitting on a:

in the big blind...
There are no raises, many callers,(probably 6) and I check to see the flop.
The dealer burns a card, and shows a flop of:
Betting continues and when it reaches me, I raise to about 4x BB and still get 4 callers.
The pot is building up nicely.
The dealer puts down the turn card.
I've hit my Broadway straight, and raise again when betting comes around to me again, and I raise. I get re-raised by a previous caller, and that raise is called by a player acting before me.
The dealer goes to set down the river card and he drops a dead card (like a

) when we immediately realize he had not burned before the turn or the river... There is only one burn card sitting infront of the board.
Crap.
How would you handle this? The field is now down to 3 players, the pot is about $25-30 (25/50 cent blinds) and has already been "localized" to the middle of the table in a mound, the remaining players are already fondling their chips to resume the action, when we stop the hand cold.
I'd like to hear your opinions and I'll tell you what we did.