I've used it before and I like it as a bow wood, the biggest issues are the high crown & checking.
I have had better luck with checking if I cut it in winter( left a few in the round with no problem, still seal the ends though) if cut during the spring or summer choose the side that will be your back and then take the belly side down to the pith, any Checking after that should be minor and nothing a dab of CA glue can't handle
As far as a 45" selfbow drawing 28"
I can only imagine it was a deflexed stave from the get go. This stuff rarely grows straight most of the time it grows in arcs going up from the base and coming back down with the deflex side facing the sky and the reflex side facing the ground.