SpackleFrog
Smash showy bell-bottom pants and sporty haircuts
Not sure it would have to be indefinite, but it's certainly a high stakes poker/not blinking game. I was on a reps training course in November and got the impression that senior figures in the (Northern) Region are very hostile to a marking ban (for the reasons you indicate).
Some senior figures in UCU are just pretty hostile to campaigning to be fair...
I mean that once 100% pay deductions are live it's basically a lock out. How long it would last would be anyone's guess but it would stop everyone graduating until it was resolved.