"With powers identical to those of his friend Superboy, Mon-El has long felt a need to be his own man....and perhaps this explains the intensity of his anger."

One take on Mon-El from Gerry Conway, SLSH #232

I would not like to see M'onel "go insane" again, regardless of his troubles and the weight of his history. Withdrawn and depressed seems to be more in character - which he has been in the past. I wouldn't think that the degree of emotional control he would have developed in the Zone would abandon him at this point.

People do snap, of course, but I would see someone like him just draw deeper into himself. And who could reach out to pull him back?

Remember the the scene in 5YL stories, after Valor got trashed for not taking on the Dominators, it was young Violet, shy, nervous, hesitant and immensely respectful, who brought him out of the brooding. I always saw this as him reacting in a noblesse oblige sort of way, but maybe it just shows that he was simply touched - and restored - by Violet's innocent kindness.

In other words, help and support for Lar could come from the unlikeliest character(s).