This is a dispute about a Company not adhering to an industrial agreement. The members are the Union, the Union does the members' bidding, and the Union is conducting the procedure. In VS, the strength of feeling amongst the pilots has been grossly underestimated by the management. IMHO, this will lead to a ballot for IA, the timescale for which is unknown.
HO raised an issue of personal improprieties. I fail to see the relevance to the dispute; I don't wish to sound pious, but perhaps such titillating sideshows should be kept out of the debate?