As for your deaths in team... you spied on a war tag and were built to suicide. What did you expect would happen? Take some responsibility for your actions.
You had a disproportionate amount of tanks for someone who was not looking to cause trouble.
As for Nurgle, I have no doubt he wanted to kill you because of your actions in alliance. But you did not die until those spy ops against us. You brought it on yourself. Do not take actions that beg us to kill you and then whine when you die. You are better than that.
We always kill untagged suiciders in team. You're far from the first to die after bothering, and won't be the last. Admitting you were planning to attack us only further validates our choice to deal with you right away.