Regardless if he comes back under a different name or not, he won't be able to hide his identity. All he does is just mindlessly flame people. He can't seem to help but be an absolute starfish to other community members. Glass is a stuffty human being. I can see him growing up to be a cold, bitter starfish completely secluded from the world. He seems to lack in any social skills and I can't imagine he has many friends if he treats people in life the same way he treats people on the forums.
No matter how Glass comes back, he will get caught and called out because he is a complete starfish and is incapable of changing.