Austin Watson & Justin Holl sent to Grand Rapids | How will the defense shake out?

From Locked On Red Wings - Daily Podcast On The Detroit Red Wings Locked On Podcast Network, Brian Fisher, Scott Bentley

Justin Holl (and Austin Watson) were assigned to the Grand Rapids Griffins on Tuesday despite two solid efforts against Nashville and New York. Is this a sign on Christian Fischer and Jeff Petry's imminent return? Or is this just a paper move? When Petry DOES come back, how will the D shake out as Detroit tries to balance 8 defensemen all fighting for 6 spots? Also, why the heck are the Red Wings cycling ONE 'A'? #LGRW