I believe what they do is record the skills of players when they are on the TL and then when you go to a team's page you will see the skills that the player had when he was on the TL. I think I have seen a lot of people complain about this in the past, but its no different than if you see your opponent bidding on a player and you write down his abilities to have. Only difference is that a 3rd party is recording it for you to see.