So basically i did the /world command on my 1.7.10 and I got stuck in a place where I can't move or do commands. I tried going to the console and doing sudo <IGN> kill, but It would not work. Whenever I come on I lag the entire server and it lags everyone out. The server is on MCProHosting.
When this happened to me, I was outside of the worldborder. Increasing your worldborder or deleting your player data file are two likely fixes. I vaguely recall worldborder had to be changed in two places.