Don't panic! It may be saved! This is the result of a forum I partisipated in, some of us told another that cracked plants won't survive, WRONG! After that thread I actually did crack a stem so ...... experimented it's been this way for about 4 weeks!
I have had that with more than one plant, and also other species of plants. It's a myth that they die, just put it back together and tie in place and your baby will be fine as long as there is no 360 split, in which case you're buggered as the enzymes can't travel.