How about removing negative trust? As per my observation its not easy to remove the negative trust weather that negative trust was given without valid reason but because of personal issues and not related to violation of btt rules.
On that question I cannot answer to that because it will depend on the person who give you a negative trust. maybe by asking for a second chance well be good? hmmf I dont know I hope they will give consideration to the person and give a warning first before judging to quick.