Stealing signs, as Spygate taught us, is not just a baseball thing. And it's common that when a team faces one of its former longtime players, it will change up its terminology slightly just so that player's new team can't gain an advantage.
Well, the Chicago Bears seem to think that defensive end Israel Idonije, now with the Detroit Lions, tipped his new team off about what defensive schemes the Bears were running.
http://sports.yahoo.com/blogs/nfl-shutd ... --nfl.html
I think its a non-issue. I'm 100% sure Izzy is not the first player to do something like this and its really not a big deal. The Bears should have expected it.