Surely he must take this seriously considering the evidence outlined
Are you going to address the question as to whether your account is an alt? You don't have to name your main accounts, but it would be nice if you'd disclose that you have at least one other account.
We already know the answer, but I'd like to hear it from you. Newbies don't get involved in forum politics right away, even if they were lurking beforehand. As far as the negative you received, there isn't much you can say that's going to change Lauda's mind. Personally, I wouldn't give anyone a neg for malicious slandering of members here, but you went too far in Lauda's eyes.
If you create a new account and spout the same bullshit, you can expect to get negged again--just like what probably happened with your main account(s). Keep doing what you did, you'll keep getting what you got.