If you happen to be walking forward (W) and bring up the weapon attachment menu (X) you will begin walking backwards uncontrollably. There is no way to walk forward as you will continue walking back until you hit ESC and return to the MENU screen. Once you return to the game, all is well again.

A minor bug, but can be rather annoying.

What, the Nano-Suit can't do 2 things at once? lol

Ha ha same guys who designed the Ipad first Gen must of had their hands in on the crytek OS for the nano suit.