I agree that 2 noticable issues are secondary scoring and goaltending, while secondary scoring issue is real, it's not mental issue, the team just doesn't have it, goaltending and defense is more of confidence and not believing at each other issue right now. There are defensive breakdowns because there is extra pressure on defense not to make mistakes knowing that the goalies have been bad and vice versa. Goalies dont have confidence knowing that d isnt playing well. A lot of times when the team is winning, then they look bad when they're losing
Varly looks like a robot, and I'm not really sure hes looked himself all year. My theory is it is related to his surgery, and I'm basing that off of collective comments from goalies like Lou who have talked about recovery and pain while playing the year after the surgery.
Grubs I don't know what to think of. There is nothing wrong with him, and hes never looked great here. In the start we just out scored his mistakes.
So while yeah it might be mental now for them I don't think it started out that way. They've gotten themselves into the entire teams heads though.