I haven't really formed an opinion on Hunter's system yet, but to be fair they had 44 shots against one of the worst teams in the league. (I don't care what their record is; the Senators are absolutely horrible.)
I'm liking that idea more now that Carlson has found another level to his game. This might be the right time to break up Carlson and Alzner and not hurt eithers game.
It just seems like that sometime over the long season, Alzner and Green should be tried together. Regardless of everything else. But yes, Carlson finding confidence should make any breakup easier. Our RD are loosely cut of the same mold, they should generally be interchangeable. All can skate pass shoot PP and PK.