Think about it-
Detroit is terrible and won't sniff the playoffs.
They got a face-off in the offensive zone against a very gassed Canes shift and going on the PP. Pull the goalie and take a chance with a 6 on 4. All you need is to win the draw and control the puck against a dead-legged Canes shift.
A quick goal on the PP and you put the goalie back out and wait a couple minutes before pulling him again. Tripp said it best- was a gutsy move by a coach giving his players a chance by taking a risk.