This section won't gonna help you to remove negative trust if you want to remove the negative trust then contact those people who left the negative trust in your profile because no one here could remove it.
Since they put you to ignore list I suggest make a new forum account to reach them. Make sure you can give a valid reason why do you want to remove red tag.
I am confused, is this your recommendation actually necessary?
JollyGood left him a negative tag and also ignored him which means the user cannot send him a personal message.
The best the user can do is what they have done by bringing the matter to the reputation board for the whole community to see. JG is also following this very thread and reading the suggestions and opinions of several users. If there are convincing reasons for JG to untag Op, he will. If he also needs to say something about the tag, he can also say.
You made it look as if, JG cannot see this post or it must only be via pm that requests of tag removal would be granted.I really think it is absolutely unnecessary to create a new account in order to reach JG.