NCAA DP/Flex scenario

[Andy]

I think I may be missing something here....

The starting player in FLEX position enters the game when the lineup is accepted.

That player leaves the game when replaced on defense by the DP.

Coach wants to reinstate the FLEX postion with a player from the bench that is not the starting FLEX player.

At this point, doesn't the starting FLEX player have to re-enter the game to be substituted for? If this is correct then the starting FLEX player has used her re-entry and cannot come back into the game.