Never use the Tow Ball for vehicle recovery! It is very dangerous to do it! This Video shows in Slow-Motion, what can go wrong!
Never use the tow ball for recovery. You never know before, how much power will be necessary.
This is not theoretically. This accidents did happen in the reality too. Here is a list of kills - who shows that this is an real issue.https://www.abc.net.au/news/2011-08-21/freak-accident/2848762