sees it as a fault and turns everything off. A way is by making an rear independent hydraulic circuit, without going through the abs.
There is another electronic way. if you use a relay, that only activates with the rear brake is pushed, And when you push rear brake, the relay join rear and front sensor wire, so the abs ecu think that both wheels turn the same (front spin), not know that the rear is locked and you keep the front brake combined. IWOULD NOT DO IT IN MY S10.
if it were so easy, I would put a relay to my wife too