Parking brake broke. Any ideas for a quick fix?

Tooth broke off the lock. Parking brake still works good, here in flat Northern Ohio, but only if I keep my foot on it. Can I just grind that one hinge bolt off and replace the lock assembly or weld a tooth on?

Looks like a huge pain to take whole parking brake assembly off. I'm thinking the front fender has to come off to get to the whole parking brake assembly? Thanks guys!
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