You are being greedy here. The odds here are way too high. Big Favorites can and do lose (Colorado Av's -300 lost last night). If this bet were to lose, it would take a long time to recover the money.
Laying -260 on a team that doesn't play their best at home and was beaten soundly in their last game doesn't sound like a real good idea to me.
I don't think the Devils are a lock because of the Domi incident. Toronto has been a very good team recently. I can't see laying -260 against them.
If you want to bet the Devils, suggest a parlay: Devils-260 with Spurs -410. The odds are about -138.
This significantly lowers your risk.