Superthrive is banned in MN? wtf you sure dude? lol

Don't spray it with anything unless it has a problem...sometimes less is definitely more bro. So I'm guessing you were manhandling the seedling and that's how it got broke hmmm, anyways you have to just let them grow dude.

In a few days that little f*cker should be just fine.

Superthrive would definitely help though in this case..all natural stuff and like night & day in plant strength and structure.