Brandon's link says that Elliot aggravated his back Saturday night. Did he come out and stay out because of it?
PackerWire, which at this point is the best online source of actual, findable information about the Packers, says Elliot indeed aggravated his back and left, leading to Gilbert coming and staying in.
So my theory is that Elliot might be the odd man out if he will need weeks to recover fully.
Before anyone jumps off the cliff at Fuckdoggle Falls though, Packer Report seems to think Elliot's night ending early was as much preventative as anything else, if I am reading between the lines correctly.