Description of Bug: When you attempt to exit a burrow while overloaded and unable to move normally (e.g. you have to sprint to move) then you fail to enter or exit the burrow (intended?). Regardless of intent, however, you cannot move again until you log out and log back in.
Reproduction Steps:

1.  Load up with enough capacity to make your character unable to move without pressing shift. (May work with less -- I didn't experiment).
2.  Attempt to enter or exit a burrow, by any means of interaction.
3.  You will not enter or exit the burrow, and instead be rooted in place, unable to move. You may spin around to face different directions.