If working to contract meant that I could concentrate on teaching (including grading) and research, and not have to fill in all those pointless forms and do HR's job for them I might just be up for it. For the last few weeks, had I worked a 37.5 hour week I would have stopped working no later than midday on Thursday.
I hear you, sister. There are many weeks I could have stopped on Tuesday by that criterion. Not counting Sunday, either.
However, although I am a UCU member, and have served the AUT and UCU in a number of capacities, I do not think that professionals should strike or withhold work, not least because they are completely ineffective, so that I will not be following "work to rule".