Early leavers in a tournament - what happens to the chips?

[TimB_Stoke]

What's the usual routine if a player leaves a tournament early with chips still in play? This happened to me last night - a player went all in, announcing that he was leaving. He then won the hand, but left anyway. His chips were removed from the table, which skewed the average and total chip counts for the rest of the tournament.

Is this normal?