Injury rule quesion?

[CecilOne]

Originally Posted by LIIRISHMAN

...snip... The Coach informs me he had no subs and I told him that he would have to take a out ...snip...).I informed the Official scorer of the out and I'm ready to start play when the injured player tells the coach she wants to go back in to play. ...snip....

This is the part that matters. Saying you were "ready to start play" implies the runner had left the game and the out was officially recorded; so that player was gone. Once that happens, the shorthanded status existed and the player can not return, any rule set.
This is like any officially recorded out, score, lineup change, etc.; once officially recorded it can't be undone (unless there was a mistake).