I don't know if Jordan, JA and Williams will be able to play this week.
Looking at the season as a whole, I am not sure it is critical. There are some who expected the Packers to lose this week. If they don't play, it won't a big factor on whether or not they make the playoffs. 6-3 going into the bye is pretty solid. Better than last year at this time.
The guys then have one more week to get back to full strength or as full as an NFL player can have in the middle of the season. From there they have the big push to end the year strong.
If they are healthy, the Packers may well take the game. So much depends on their attitude and not making stupid mistakes. I was at the game in GB when the Lions beat them senseless. I left expecting a high draft pick. In just a few weeks they were able to shift gears and get going. If the Packers can take this game they will have the inside track. The two most difficult games left on the schedule will be the second Lions and vikings game and MN is teetering on implosion. Two bares games that I expect the Packers to win, SF, just because and out in Seattle are the other interesting games that they should win if they play like they can.