Keel beam,
I cannot speak for Strikers but maybe it is not the Staff Travel but the unfairness in their eyes of it's removal that drives them on. Some of them would like their day in court because they want to prove to everyone that Willie Walsh should not have punished them by removing it. Also some, not all, of suspensions and dismissals are seen as over the top also.
That is only my opinion as to how I see it having talked to some of them. I am sure there are many different reasons but that's the general feeling I get.