Which specialty are we talking about? Appealing the grade would almost certainly do more harm than good. I highly doubt that one below-honors grade on a sub-I will bar you from entering a particular specialty, especially if the rest of your application is solid.
By the way, never believe any PD who tells you that you're "being actively recruited" for their program. After every match, there are countless stories about applicants being buttered up and courted by PDs, only to be disappointed on match day. Don't fall for the mind games.