You have the same problem as this person here:
{2}
It might be the server issue with skins, or it may just be too many entities in one place. Where were you last time?
If this hasn't been resolved, try logging on at a later time, or ask a mod to force tp you out. If that doesn't work try changing your sking to Steve and reset it back later.
If you were in creative it's most likely that you were in a place with too many entities.
