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An Ontario man with a history of drug abuse who was found not criminally responsible for murdering his mother by striking her “numerous times on the head, back, neck, and arms with several weapons, including a large bladed knife, a smaller paring knife, a claw hammer and a large pry bar,” has seen his cannabis prohibition removed as a test to see how he handles it. Michael Stewart, now 46, was deemed not criminally responsible on account of a mental disorder in May 2003 on a charge of second-degree murder for killing his mom, June Stewart, in Renfrew, Ont., the previous year. “Mr....