Villa boss Lambert: O'Neill sacking means no-one safe
Villa were being beaten by Liverpool as the axe came down on O'Neill.
"I only found out late on Saturday night and I was shocked like everyone else at what happened," said Lambert.
"Nobody is safe. I was privileged to work with him for five years. It was fantastic.
"If you make that change, I am not so sure... If you think somebody is just going to be appointed pretty quickly there at this stage of the season..."