I feel we should have a poll on this in the offseason.
I'd vote for KK's and Boxy's side. We do already own the player, it's not really an add, more of a transfer.
And as for the "What if a commish wasn't available for the move? Should that manager be punished?" argument... There's 9 commishes at the moment for the DDL on Yahoo so finding one to make the add shouldn't be a problem. And if you decide late in the night to make the move, tough luck, should have spoke up earlier.