It sounds like Jermar Jefferson is focusing on the facets of the game that he needs to be focusing on. This training camp and pre-season is critical for Jefferson, regarding his future with the Lions.
As mentioned in that thread, Jeff Risdon has a different opinion on how Jermar Jefferson has performed in training camp. The pre-season games and the practices with the Colts will probably go a very long way in determining how the Lions proceed with Jefferson.