Maybe check your logs to see if you in-fact did combat log, but as the others said you may have been standing too close to pvp area, someone used a furious pick and you got afk-kicked. But check just to be safe, then reply here.
Haha. It was for testing and i simply forgot to reomve it. My apologies, and just to prove that it was a test, i was testing the cave spider head drop for wither (you can ask him about it)