What a cute little guy. I'm partial to the little runts for some reason.

As far as the toungue goes, for all we know it could just be mishapen, with no detriment to smell/taste. The tough thing about diagnosing an issue like this is if the snake has a weak feeding response it doesn't neccessarily mean it's sense of smell/taste is the problem. Good luck with this one, and remember that he could turn out to be your best feeder and fastest growing guy!