Billy Doctrove: A witness or a party
I think Billy statement in ball tampering case is very crucial, and I have kind of feelings that he may think of his career and will express his true feelings at the hearing.
His professional ethics should make him stand behind ICC and gutless Hair, but truth and his professional interest may prove him otherwise.
Everyone knew how incompetent he is, and based on his track record he seemed like he will be dropped from Elite panel at the end of his contract tenure, but he could save himself on two grounds: 1) if Hair is no more part of elite panel, this may increase his chances for staying an other contract year, 2) winning blessing of boards like BD, IND, PAK, SA, SL, ZIM and WI (most likely going to vote against Hair) by saying the truth about his lack of agreement with Hair at Oval. Now question will be asked why did he supported Hair, he can say his professional ethics make him stand behind his fellow Umpire to avoid any drama at the centre. He can say if he knew this will boil down to this, he may have disagreed with Hair in first place.
I think if he go the second path, it could save cricket by removing bias, racist, dictator type of person from elit panel, as well as will keep him on the panel for some more time and he could work on his flaws, may get a new prescription for his glasses, can watch Simon Tufel and Aleem Dar video and could learn.
Good luck truth.