Actually I think you can register it anyway, photos are optional. For complex hybrids at least. I've had to register a few oddball hybrids just to get awards processed. Sometimes you get plants with nested brackets (X x Y) x (W x {Z x N}) is a problem I've faced before, the AOS doesn't seem to care that I need to register 3 things before I register the new cross. Originator unknown is sometimes your only option. RHS gets money, AOS gets money, everybody gets paid except you.
If you are the orginator, then even better. I wouldn't feel bad at all about registering something that tried to bloom if I made the cross. I probably wouldn't do it because I'm cheap, but if other people are going to be jerks about it and you really want to name it, seems fair to me.