For what it’s worth, I don’t see your profile as having a -1 but that is because I have DT removed from my trust network due to people like marlboroza who make heavy handed decisions when it comes to leaving negative trust.
Ditto (but not for the same reasons). However, I'm pretty sure it's not the rare cases like us who have rebuked the DT system that concern OP but rather the 99.x% of the rest of the forum who
will end up seeing his red tag.
Aside from marlboroza being MIA, he did leave a reference link for the feedback he left so it's not as though it isn't justified or something that should be removed after an arbitrary period of time. Assuming what marlboroza alleged is true, I don't see what OP has done since the feedback was given that would warrant it being removed.
1. Why didn't you come out to defend yourself against the accusations and feedback that were made against your account at that time?
While that's a valid question, even if OP successfully defends himself, there's still the issue of marlboroza not being active. I guess someone on DT could leave a counter-feedback, but OP really ought to have spoken up when the accusation was made.