Well, according to Keefe during his post game media availability, he had never even considered throwing Campbell in goal during that game.
The Swedish netminder allowed 8 goals in the contest, but Keefe was actually quite complimentary of Kallgren after the game, specifying that his play in the first period was "excellent".
Was it really a wise move to allow the 25-year-old rookie to get blown out the way that he was at this stage in his young career? We know that the goaltending position is one that requires a lot of confidence and perseverance in order to excel. On the other hand, when a game is already well out of reach, especially at this point in the season, it also doesn't make much sense for the Leafs to throw their #1 goaltender in cold and risk injury in an otherwise meaningless game.
It's very likely that we'll see Kallgren and Campbell draw two starts apiece over the Leafs' final four games, as I'm sure the coaching staff will want to try to get both guys going before the playoffs begin.