There is only impeachment and removal from office in the removing a President. The electoral college can elect anybody it wants to, even the Jimmy the garbage man in Hoboken. They are not bound to respect the will of the people.
It’s all you have in your system. There are no do overs and the EC cannot undo what it officiates, as far as I know.
I know you believe that, but you are wrong.
People wouldn’t tolerate a wrongfully elected President staying in office, once it was known he had lost the election.