I work in a Biotech company and my current manager has no scientific strengths. He is focusing on managing projects, but that's it.
Recently senior management decided that my work is important for the whole company, and I start reporting to a VP. Later on there will be a unit with other specialists under the VP, but right now I am going to be co-managed for a while.
However, my current manager is already politically compromised and is trying to use my expertise to survive. He already got demoted shortly after starting. He keeps asking me for details and then repeats them at meeting to people who know even less than him. My senior colleagues keep asking me to interact more directly with them, but my manager keeps trying to put himself in the middle to intercept communications and requests even if he does not have the competence to understand what a specific project would imply. The VP has a technical background and understands me.
I am happy that change is coming, but I can't wait to get rid of this parasite and at the same time I don't want to be the one who badmouthed his manager or got him fired. But I feel dirty when I talk to him, I feel more stupid every minute.
My question is: how can I handle the transition between my manager to the VP, keeping professional integrity and a good face while avoiding getting credit stolen by my manager?