Looking at the teams in playoffs spots or close to them, they all have fewer goals against then the Habs. Don't understand why Montembault is played until he struggles. He plays much better when he's rested, which is pretty much the same for most goaltenders, especially one playing behind a young d corps. If they believe in Dobes they should play him, if not give Primeau a shot as well as he's played since being sent down (maybe not a coincidence he's found his game getting to play more).
If they are serious about making the playoffs this season or going forward and making some noise when they get there would be wise to have two goaltenders they have confidence in sharing the load in my opinion.