Flynn is part of the Russia investigation so I'm not sure how you can claim it wouldn't be impeded. Trump is not somebody that strikes me as very loyal either. He fired Flynn for lying to Pence about his Russian meetings. Trump is very much about protecting his own fat ass. Flynn probably links Trump with the Russians and their attempts to get Trump elected.
And while I recognize politically it would be better for Trump to be President, if he did work with the Russians in an attack on our democracy that crosses a line that puts country before political parties imho
