Before catching anyone's eye if you are able to delete it then you are safe. I saw case where the archives had the post but the user deleted it from the forum, he was safe.
The jerk will only get away if the post he deleted was the only one that was plagiarized on his account, but if he has others, he'll get the hammer because Mod always check entire posts before making a decision. Plagiarists almost always leave something behind.
I don't know how i got ban, because i have checked theirs no place I'm reported, but on my screen what is displacing as penalty is as results of spamming and plagiarism
You were banned for spamming; have you tried contacting the mod via email on the banned message?