Why can't I move a locked player out of the IR section?

This is currently a limitation of our system and something we plan to address in the future. All players lock at the start of their game, regardless of which part of the roster they sit in currently, and therefore they can't be moved. As a workaround, you can ask your commissioner to adjust your lineup for you before the week finalizes (i.e. Monday night for NFL). They have the ability to move the locked player out of the IR section. To do this, they will need to go to League » Settings » Set Starting Lineups (in the Commish Powers section).