If I was trying to hide the fact that this account is connected to my old one, I would have no problems doing so. As far as I know this old but still functional forum lacks ISP tracking, and even if it did, I have access to dozens if not hundreds of PCs at my Uni, each with a unique ISP address. Hotmail accounts are free and unlimited, and with a new username you would never know it was me.

Therefore returning with a forum name as similar as possible to my old one and calling attention to my return should be sufficient indication that I am not trying to cause trouble.

Good point, and good luck with the admin. I don't think you should be banned for something that's already been resolved.