Poor Severus. It seems that the Order members should assume he would have been assaulted in various ways since they know he's also a Death Eater. That cannot be a healthy thing to be. Especially as a Half Blood, assuming most DE's do not know that Tom is a Half Blood- one thinks Lucius wouldn't follow him so slavishly.
There are a lot of fics out there on "what the Death Eaters *do*" some are pretty funny (the parodies where they are playing card games or charades,) but some assume that they gang up on each other at times...which I can see. Mob mentality. And Severus would likely be a victim of those times...
Anyway, you just brought out something I think on at times...what different things happen to Severus at times in his life and why, and how does he overcome them.
Excellent fic and as often happens you've got me thinking. : )