Fighting a wither skeleton in the nether and after hitting it 10+ times the wither froze. I was at half a heart and could walk around the now stationary wither when I was disconnected. I have since been unable to connect to my world.

After pulling my hair out for a while and eliminating everything I could I decided to try my son's Android device. Turns out he can connect, but only if I am not connected.

I took his character to the place of disconnect in the nether and found the same wither skeleton still within a few blocks of my old character ( I assume the same skeleton, it was moving and not frozen)

Here is the odd thing, while my "Owner" character was attempting to connect I could see my gamertag and then even the character avatar (including armor and weapon). A few seconds later both clients disconnect with "Disconnected from server" error.

The error is repeatable, I can login and play on my secondary Android device and it works fine up until I try to connect with owner account, at that time the guest account is kicked with the same "Disconnected from Server" screen.