How times and loyalties have changed
Times have certainly changed but loyalty ? Are you suggesting that the NTUS reps are acting dishonestly ? If so I think you either need to withdraw the accusation or find some evidence to support it.
Certainly the NTUS has modified its approach, sometimes you have to amend your demands when they are shown to be unrealistic, but to describe that as betrayal is ridiculous unless you can prove that they are acting in anything other than what they believe to be the best interests of the membership as a whole.