He's pretty indifferent to that type of thing and normally doesn't leave groups - he just ignores the messages. So I'm intrigued. If he truly doesn't care if I'm around (as his bro claims), why blatantly rename it with his name and then disappear?
Maybe I'm reading too much into this. But I'm curious.
He's also blocked me/unfriended me elsewhere. And his bro says I'm essentially dead to him - in the sense of "you don't exist to him."