This morning's patch fixed it! WOOOOO!!!! They didnt release the patch notes yet but I tested it on my game and I no longer get stuck! WOOOOOOO! Also, B no longer opens the console. I can play now!
I have two keyboard related errors
First, I can cause all input (mouse and keyboard) to freeze and become inactive until J key is released using the following method
1) In settings unbind J and K keys from chat functions on "common" page
(These keys can be bound to other functions, I use them for "Backpedal" and "Strife Right")
2) Press J + K together in any order. You must remain holding J, K can be released
3) All input becomes inactive!!!!
In their default function you would never hold these keys at the same time, but as my WASD is UHJK it really screws with my keyboard configuration.
This bug happens at all times ingame, regardless of vehicle or stance.
Second, Also you can trigger the console with a key combination.
1) Be ingame.
2) Press and Hold J
3) While still holding "J", tap "B" twice
4) Console appears onscreen
It looks like this person is also having issues a similar bug!
http://answers.ea.com/t5/Battlefield-4/BF4-PC-Pressing-B-on-keyboard-bug/m-p/1636347#M12706
