Help required - Parked my Caldina for a few days on two occasions with all parts working well.

The car was started, hand brake released, gear stick placed into drive and at the point of releasing the foot brake, a loud sound as if a cable was broken was heard from the rear. The right rear wheel bearing being damaged on both occasions.

What could cause that?

I would not object to an email explaining the causes. kcmorrison2000@yahoo.com

Please guide urgently.