Just so you know, for future reference, when someone says they have mods installed we don't go and research them first. We ban, since the rules state "No mods", and inform the player to remove them. We can't possibly know about every mod in existence, although i do know about Zepplin. I don't know about the other one, or rather didn't until I just read up on it. That said, once again it says "No Mods".
If you want mods installed for single player simply keep a modded minecraft.jar file in a backup folder so you can quickly go back to it when you are done playing on Opti, and then copy the original minecraft.jar back when you want to play on Opti again. It only takes a couple seconds to rename the files. It's how I do it.
You've been unbanned.