there's not much you can do, it's too similar a name to log in with yours, this is one thing 0.3 didn't fix, mainly cos no-one cares about names on DM servers, ask an admin to ban him.No-one likes an impersonator
I had this problem on my Eric_Hopkins account. I have no idea what it was, only idea I can think of is the location I spawned at. Maybe too many vehicles around me? I don't know. Anyways, I changed my spawn location when I actually got a chance to login and didn't have the problem anymore.