I have never heard of a flywheel blowing apart, but i know a buddy that didn't torque the bolts down and they ended up backing out.
Did you ask to see the broken flywheel? I know shops will try and throw out some bogus stories to get you to spend more money than you need to.
Did you ask to see the broken flywheel? I know shops will try and throw out some bogus stories to get you to spend more money than you need to.