My game crashed. I restarted it, reconnected to the same battle. At first my tank was ghost. I went and self destructed. It became solid like you see in above image but I was able to go through all tanks, enemy and friends. As a result I lost one teleport charge as I had to exit. Please fix.
Bugs
I had a similar issue a few hours ago.
See here: http://echo.tankix.com/forums/5-questions-and-answers/topics/11007-ghost-tank-forever/