Jace says he wants to get a new username and a new community. I'm thinking if he does that right now, it'll be something anime based, because that's all he really has to turn to at the moment, until his next "transition". Problem is, Jace has a very distinctive writing style, and a big personality, he'd be easy to spot if you happened to belong to his new forum or whatever it may be.
I think it'll be hard for Jace to adopt a new persona if he doesn't cut off all contact. It'll be too hard for him to double think Cmdr Stryker away,can't pretend it never happened if it's always in your face.
I reckon finding a new interest and becoming a new character is too long a process this time around for Jace. I think he'll spend the next few weeks, maybe months, playing the new COD, and then loneliness and lack of direction will force him back to Stryker mode.
Eli should probably start learning Hebrew.