Sam's Strategy

I feel like Sam horribly misplayed his last run:

(1) why not use the Bridge troll immediately before playing the move card? That is just one additional thing the seekers would've had to do before asking their question after he had moved for no extra cost

(2) Why not take brain drain, especially when his hand was empty? Since he chose to stay in a large metro area, could've really effectively played by killing any possibility of asking further thermo, tentacles, radar questions. Would've been almost no cost