WSOP reports "Sends him into the tank"

[Riorin]

I've been reading WSOP reports on P....Listings and every 3rd hand someone goes "into the tank" and finally makes the toughest call of his life by calling with set of 5s on flushless, straightless and non-paired board to discover his opponent was holding KJ for one pair.

Example
[ QUOTE ]
Tobey Maguire is involved with one other player in a large pot with a board reading K-3-9-2 (9 and 2 of one suit). Maguire's opponent bets out $13,000 which sends him into the tank. Maguire eventually makes the call and the river falls A. Maguire pushes all-in and his opponent calls flipping over pocket nines for a set but Maguire had that beat with pocket kings for a better set. Go Spidey!



[/ QUOTE ]

Can someone please explain that "goes into the tank" phrase as I don't seem to understand it or is it just bad reporting?

P.S. I was under impression that "going into the tank" means thinking for a long time before making a hard call on a board full of possibilities (flush, straight, full etc.)