Or, he just released it before the DNC because that was when it would have the most visibility. Especially when part of what was released was evidence of the DNC conspiring against Bernie Sanders.
Do you see that as pro-Republican just because it was anti-DNC? You could make the same argument that Bernie told him to release it then because it was so favorable to him.
You’re right, nobody can ever know even remotely everything.
Luckily, the same device you used to post that comment can also be used to check if what you are about to say is actually true, so you can prevent yourself from spreading misinformation like this in the future.