Your lucky dude, I have know many 2.0TDi blow the turbo straight after a remap from many tuners (who wont admit for it lol) that extra 150-200mb boost is enough to finish a weak turbo off straight away. In the last 24month I have had 2x 140PDs chuck there muck on the dyno on the first mapped power run. New turbo OEM Garret from Turbo Dynamics £400 and cars are then fine for another 100k+
The is no way of knowing if a turbo is going to fail and with a 140PD its a waiting game, Like I said before and echo Craig its the risk with tuning.
Nick