"When they unplug the anti-lock brake module, the brakes work fine."
Why can't you just leave the abs module unplugged? You would have regular brakes like back in the day. It could also be your wheel cylinders sucking in air.
Legally they cannot release the vehicle to me without anti-lock brakes due to BC laws. If I get pulled over and inspected by the CVSE and found not to have them working, my vehicle would be removed from the road until fixed.