I think it's just as the CB coach said... right now at CB the Packers have Sam Shields and everybody else. I think Randall is good, but not #1 CB good... at least not right now.
The Packers gave up 3 TDs, and I think all three had some form of communication (or preparation) error.
Hawkins assumed the WR was out of play... and let up on the play, giving up 73 yards. Then once he realized the play wasn't over panic and tripped.
Rollins on the 2 yards pass TD, seemed to be talking with a teammate during the snap and was not prepared for the ball to be snaps/to go out on the route yet and was easily lost by Boldin.
Randall also wasn't prepared for the snap (I didn't see why, maybe he was talking pre-snap as well) and when the play started he had to regroup from the start just to keep up... and then was in a bit of panic mode and also tripped.
Maybe communication was slower due to Burnett being out or something, but the CBs (all players really) NEED to be prepared to play before the ball is snapped, and not assume the play is over.