No.
Woah man... Well it's either time for you to buy a bunch of games, or become a master photo shopper!
You were banned for using a public header.
Than public headers? For sure. Than private headers? I'm not so sure. Personally what I think I'll do is play my offline games as CIA files (they are a smaller size and I don't have to keep pulling them on and off. Plus, they look cool on the system). But I'm going to play my online ones as .3dz files with a private header that I ripped from my copy of Bravely Default. This is because I dunno if they can tell if the version of the game that you're playing is a CIA (in which case we can get in trouble if they see we're playing a downloaded version of the game that we didn't buy) and we aren't sure of what info the activity log gives to them about it either. Assuming that they can't tell that a ripped header was from a different game originally, and if you keep the header to yourself, then private ones are safe. Lots of "what-ifs" though. I'm honestly scared to play anything online right now. But if I were to pick between CIA and private header 3dz I think I'll chose the later.
So this should end the discussion on if mac spoofing will help.