Most likely all the GMs are secret hand shaking gold ole boys who are all in an elite group together, there is probably not a lot of animosity between them regardles of trade outcomes. Though I'm sure there are exceptions to that..
Danny is a pretty respectful person who obviously has a moral code. I doubt any GMs are going to boycott him or think he is some sort of snake.
In the last 2 seasons Danny has traded with Cleveland, Phoenix, Detroit, Dallas, Miami,
Golden state, and probably more that I'm forgetting.