I support unions but, as someone old enough to remember the BLF, the MUA, The Painters and Dockers, the Storemen and Packers and their petrol strikes of the 70's, the British auto unions and some of their irresponsible use of untrammelled power, I agree that checks must be in place to avoid abuse of industrial power. Particularly when it is ideologically based or purely politically motivated.
The main reason the AFAP got creamed because they didn't play by the rules. The TWU is not above the rules either.