Help please..!

[Crippin]

Right, when I go to turn round and reverse, i put full lock on and break and my car seems to jolt/slide.
I'm not sure if it's just because the roads may still be slippy, but it's never done it before we had all this snow.

 

[Ralphizzle]

Err. differential working... one side slipping, other has grip so it pulls to one side.

 

[Crippin]

Is that a bad thing?