is this possible?
 

that a single player in a file can become corrupted? In the online league I run, one of my minor leaguers, who just got called, anytime i try and put him in the depth chart, click on his name, or even hover the cursor over his name, I am getting CTDs

Update,

I was able to send that player down and called up another, still CTD trying to assign the new player to depth charts

Do you know how to export rosters? Export your roster to a comma-delimited file, do a search for that player in the file, and see if there are "nonsense" characters by his data. If so, don't just remove that player's data entirely; replace the nonsense characters with valid data, or a comma, then re-import the roster.