I think it but won't say never. We don't have all the facts.
Also making accurate predictions is hard especially when predicting the future.
You are correct, never is a bad clause to use.
However, it will take one of two things. The first is that if the donor class turns on him and demands the gop remove him; this is very unlikely. He is no threat to the donor class.
The other would be his base turns on him and refuse to punish gop members who would vote to remove him. Trumps base is powerful enough to primary any gop member who would move to remove trump, or even criticize him.
So far, while his base may have slightly shrunk, it is still solidly with him. They are protecting him by threatening the gop (physically as well as electorally).
So unless there is some sea change in opinion, he will survive. And the muehler investigation has already been neutralyzed in the base. They will never belive the findings.