Many people on trackers are no longer eligible for TRS anyway, as they secured their mortgage over 7 years ago. If the abolishment of TRS relief for tracker customers is to be introduced, it would only be people who took out a tracker mortgage over the last 7 years who would be penalised. Surely this in itself would be inequitable, as recent mortgage borrowers have more money to pay back, yet they would be the ones being punished?
I think that there is a lot of unnecessary speculation going on here...It's interesting to note that the thread entitled "any chance of banks wriggling out of trackers" has not been active for over 6 weeks.
http://www.askaboutmoney.com/showthread.php?t=135875
This is because, at this stage, people know that the banks have no way of reneging on tracker deals.
Similarly, I'm sure that this thread will become inactive soon, as it is pure speculation which is highly unlikely to ever materialise.