Thanks for taking the time to answer my questions.
I pretty much assumed that the situation had been dealt with correctly, and the vibrations certainly gave me the impression that the props were out of balance due to ice so that didn't concern me too much so long as they were still able to propell us forwards.
More surprising to me was the instability in flight - I am not trying to say that we were plummeting towards a school or hospital, but there was certainly enough movement to feel like turbulence. I repeat that I am not trying to imply that the crew were losing control, I was simply surprised that it seems something caused by the ice was enough to affect stability. I'm interested in what is the likely cause?
Also I guess we easily climbed above the problematic weather - albeit only a few feet above - but can the aircraft continue to fly safely through these conditions, or is it always a case of getting out of that situation asap?
Thanks again