This is just a guess, but I'm going to go with Ban Evasion. Iirc you hit the ground running when you joined the forum, some even accused you of being an Alt of a better known member at the time. You are very active so are clearly aware of plagiarism and it's punishment, and with the launch of the Bot you likely scrubbed your post history if it contained plagiarism.
What has changed though is that accounts are monitored for suspicious activity to some extent I've been expecting more Ban evaders to be caught since then; maybe it's starting to take place.

While I love your first post and wish more newbies could say this
"First thing I did was use the search the forum rules I wouldn't want to fall on the wrong side of it
https://bitcointalk.org/index.php?topic=703657.0 it's quite plain and straight forward and would give my all to stick to it. And also the post from Lauda was loud enough https://bitcointalk.org/index.php?topic=1689727.0"

It lends further to the likelihood of Ban Evasion. Either way you seem to have done well for yourself, all you can do is to plead your case and follow the appeal process.