not sure if it was this draft league or one of the other ones but such situations in the past have been resolved in the following manner: once a selection has been made (even if it is in error) subsequent GMs may proceed with their picks and the GM who screwed up can come back at any time and pick from the pool of still available players - however, since I don't see this expressed in the OP here I will withdraw my pick and wait on the commissioner's ruling