As far as I know this section of the form is created in order to appeal your ban. Is it not cruel to punish the bath for what the newcomer of the forum did 1.5 years ago without the right to appeal?
Alright. I'll be honest. If I remember correctly, sometimes, though it completely depends on the offense(idk about plagiarism), sometimes the admins give chances to certain users if these certain users has contributed decently to bitcointalk, may it be through good writing pieces, helpfulness on the newbies, constructive opinions, and such. But taking a look at your main account's last 3 page replies, 99% is just bounty spam. Sooo.. yea. You're chances are slim to none.