I was wondering about this. I know that sara x crestie hybrids usually turn out fine, but geckos in general do not hybridize as well as pythons seem to.
I've seen a few really wonky and deformed crested hybrids.
That said, I don't think this one is a hybrid. My first thought seeing the picture before reading the text just had "sara x crestie hybrid" flash in my head, but I do think it's just a deformed crested that resembles some of the body structure in those hybrids.