Man I feel for you. What a day for sure.
I had a BFG fall onto a slate floor. Slide off a table it was just leaned against.
I was extremely fortunate though I surely did not feel that way at the time.
Since it wasn't strung at the time. The only damage was two top hat control knobs were broken. I just bought them though to replace the wooden ones used on the BFG's.
I can clearly see that having a strung guitar take a dive like your's or mine did that the damage to the headstock fracture greatly relies on the fact whether or not there is string tension on it.
I'd never thought about it till now though. If it were unstrung it probably wouldn't have broken like this. But, hell, what are the odds that it won't be strung when it falls?
I'm very sorry to see your baby hurting so badly. It is (as already mentioned above) very fixable.
Best of luck to you & your repair job. I'm sure a competent Luthier can do an excellent job of it too.