I think I would play this the same way postflop. That is, bet around the pot on the flop, and I would definatley fold to that reraise (without further info).
You are representing something like AA or KK, and he just doesn't care.
It's not likely you are facing AJ here or anything. I 'd sooner say you are facing KK or AA or a set (JJ or 99 likely), I wouldn't be too afraid of a straight. If this guy bluffed me out of a pot in this way however, I would be sour though.
As for the preflop reraise, I don't think you are making too big a mistake there. Postflop play is paramount in 6 - max, although I probably would've just called with the Q's here. Because I can't outplay my average opponent well enough to reraise Q's preflop, and play my marginal pair out for possibly my whole stack.