Why is everyone guessing?
I love the guess work that goes on here!
The engine was not shut down and operated with no vibration at low thrust settings so I am told - not guessing here!
As previously mentionned on this thread, the completion of the checklist for high vibration that results in no vibration does obviously not require a shut down or any kind of "immediate" landing.
The first post actually made me laugh when I read it!
Job well done if you ask me.