Sometimes when you exit commander view controls become unresponsive and the only way to get them to work is to suicide. no further informations.
It has happened to me quite some times. I think it happens when you press F2 while still holding WASD. I always fix it, but I cannot recall a method. Luckily, it never happened at crucial moments.
It was happening to me like 80 % of the time I gone into cv, since some version. Really annoying, gotta get out and back in or it just drives into any stuck direction