I've brewed the AHS recipe before, and the guys there tell me that the 512 recipe was based off modifications of this. So, its probably as close as youre going to get.
It is not bad form if you ask nicely. Tell them you are a homebrewer and love their beer. They are under no obligation to provide you a recipe, but many will. I have emailed (512) about the IPA but have yet to receive a response. I have emailed other breweries and brewpubs and have received many informative emails from helpful brewers. Good luck!