Surprising Tourny HH

This is not one of my HH's, but one from a blogger I watch online from time-to-time. This is in a satellite to a FTOPS tourney (names changed to protect the idiocy):

Player A raises to 210
xxx folds
Player B calls 210
yyy folds
zzz folds
*** FLOP *** [Jd 8h 2h]
Player A bets 300
Player B raises to 1,410
Player A raises to 1,510, and is all in
Player B calls 100
Player A shows [Qh Td] <------ HUH?!?!
Player B shows [Jh Ad]
Bwinkle53: gl
*** TURN *** [Jd 8h 2h] [Tc]
*** RIVER *** [Jd 8h 2h Tc] [Kd]
Player A shows a pair of Tens
Player B shows a pair of Jacks
Player B wins the pot (3,530) with a pair of Jacks
Player A stands up
*** SUMMARY ***
Total pot 3,530 | Rake 0
Board: [Jd 8h 2h Tc Kd]

Seat 3: Player A showed [Qh Td] and lost with a pair of Tens
Seat 5: Player B (button) showed [Jh Ad] and won (3,530) with a pair of Jacks

Did Player A really think Player B would fold for an extra 100? When is queen high good here?! Or maybe it was a shove with the gutshot? All I was thinking was: "wow."

I'd think about giving up poker if I made a move like this.