you can usually tell if a snap is a permanent break if the leaves go very limp (usually by about 6 hours later), like not watered for two weeks limp, if that happens then the damage is probably too severe, but from that picture, i'd bet my wallet that you'll be fine, that's not too bad, I knew an old hippie grower that beat the living crap outta his veged plants, damage just like yours, only on purpose, and his plants had the "woodiest" stems