Hopefully Johnson's last couple games are part of a longer hot streak. I'd love to see him get the majority of starts for a couple weeks and be able to maintain a good save percentage. The team needs some repetition of good habits and confidence.
But I expect Johnson to not be able to maintain starter's minutes at that level over the season. He'll probably falter. And Allen will probably have a better stretch where he comes back and starts to look like the better option. If they're being played as a tandem like that, Husso (or possibly Binnington) should have an opportunity to come up and get some games. But it feels more and more like there is groupthink that Husso is going to automatically be able to function as an NHL starter, with a growing body of red flags that he is probably not ready yet. I don't think Husso should be the Plan A for this season if you need to replace Allen as starter (and I think they DO need to).
Replacing Allen consists of two parts:
1) move him. That contract is a problem, but no more so than Lehtera's was. Its probably going to cost some painful assets price to get someone to take him, but I think it can be done. It will be easier when some teams that are starting hot fade out of the playoff race and embrace rebuilding.
2) get a new starter. For this season, I would be open to acquiring a rental goalie. If you can identify a longer term option, that's better, but the options right now leave a lot to be desired. A rental price for Bobrovsky that isn't as high as the current rumors could be manageable. If things click, you have an opportunity to sign him to something more. But acquiring long-term contract in trade (like the suggestions of Schneider or Howard) can create a barrier to Husso later, and risk taking on a guy with an even bigger commitment than we have with Allen. If that guy fizzles, we've wasted assets to move Allen, bring in someone, and made a BIGGER problem.
The ideal would be to identify a young guy that is ready to something more, but log-jammed on his current team. Or who had a bad stint and is really better than that. (Dubnyk again, is a great example of this.) I don't have any good names here, but if the pro scouting is worth anything, they hopefully have a couple good targets that we aren't discussing who could be options. It would be ironic of Pheonix Copley is one of those names.