Flywheel bolts sheared off,

[drewfreer]

Hey guys I took off my tranny because it was vibrating violently and turns out my flywheel had come out. Everything came out with the tranny. I've read some forums and people say that you have to replace the crank, so that's basically what I'm wondering. I'd like to buy a new flywheel and hope that it won't happen again, but I'd just like to make sure. The spindle on my tranny doesn't look bent at all either... What are your thoughts on the course of actions I should take? Thanks