1) This pilot should be made to pay for all brake packs out of his salary. What a idiot for wasting money, and as implied before increasing rick due heat.
2) Was it actually required to burn the fuel? I assume the flight plan was correct, just the estimated taxi time changed on this 30 degree day.
3) Max Take Off weights are common, when lined up on runway the temp is 2 degrees higher than planned - is a recalc carried out to see if more fuel needs to be burned before opening up the throttles?