Rocket hovers above the ground after its command chip explodes

My rocket`s command module exploded and then another part of it just flew away and... hovers above the ground at the height around 800m not moving for quite a long time, though TWR is high
Easy to reproduce, just create a simple rocket and explode its comman module without hurting rocket itself. Then it will flew away and hower.

P.S - sorry for my bad english, i hope you coped with translating it :D