shuddering when turning tight turns

I've read that changing the transmission fluid can release this torque-lock.I'm trying that next week.In the meantime,to avoid further tire damage,I've disconnected the All Wheel Drive by putting a fuse in the AWD

slot in the fuse box in the engine space.This gives you front wheel drive only,which is fine until the snow comes.

If this fluid change doesn't fix it-what next???