I like how Bedard puts it when he says in his article:
“The biggest surprise here isn’t that Martin was released, but rather that Anthony Smith was cut. There must have been a fierce internal debate about him because he played better than Aaron Rouse and was decent enough on special teams to keep. Coach Mike McCarthy indicated Rouse might be back this week after missing time with a hamstring, but getting rid of Smith is a bit of a risk. It’s possible no one will pick up Smith and he’ll be available if the Packers need him in the near future. But they go into the Chicago game with Nick Collins, Atari Bigby and Jarrett Bush as their top three safeties. Rouse is going to need time to get back in shape.”
I am not comfortable with Jarrett Bush and an oft-injured (and presently injured) Aaron Rouse as back-ups. Maybe they have the newly acquired Derrick Martin (CB/S) from Baltimore pegged to be a back-up safety. Even if that’s the case, it’s a bit surprising they’d take him over Anthony Smith who has had much of the offseason to adapt to Capers’ scheme. Could be more of a long-term thing though – maybe Martin is someone TT has had his eye on for a while now.