With the argos going to hire Chamblin as their DC (which I don't know why they would because he is over-rated and struggled in that role here in Hamilton), the Cats should get Stubler. Now I really like Reinebold, but he doesn't have the defensive experience that Stubler does. Reinebold can go back to coaching special teams, which is an area he has exceeded in.
Also Steinauer's defensive schemes and ideas are based on and very close to Stubler's, so there wouldn't be that big a difference or huge change to continuity by bringing him in. I would feel better about the Cats defense and team overall, if they made this decision.