Ethan Crumbley’s father spoiled him rotten — but was a deadbeat dad to an older son he had with another woman, the ex says in a new interview. James Crumbley, who fathered her 18-year-old son, is “a piece of s**t,” said Michelle Cobb, adding she hopes he “gets the maximum” for his alleged role in the slaughter. And Jennifer Crumbley, the mother of the 15-year-old accused of shooting up his Oxford, Michigan, high school Tuesday, a “monster,” Cobb said.