[Rushmore]

The most important thing here is the fact that you believe you're dead money.

If this is true, and not merely an affectation designed to reduce your responsibility to play well and to alleviate any potential disappointment you might experience by losing, then I see no reason not to play the hand the way you did.

Sklansky goes into this a little in TPFAP, and it's really good advice, when making marginal decisions. To paraphrase:

Marginally -EV big calls/raises are OK if you feel you're outclassed at the table/tournament.

It's the equivalent of swinging away rather than trying to squeeze a run across when you're down two runs in the 7th and the unhittable closer is obviously coming in in the 8th.

Or something.