I don't like how long the trail of this motion blur is. I know the curves can be manipulated, but I'm thinking I need something that just changes how long the blur lasts.
Question 1: Is this a situation where I should adjust the shutter, and if so, what would be the best value? Animation is set for 24fps.
Question 2: Should I avoid motion blur entirely, and what is the most appropriate setting for a slow motion glass shattering scene?
Edit: After lowering my shutter to the correct setting (thank you @cegaton), another issue occurred, as mentioned in comments.