That makes sense, I guess I got too excited when I found the ComputerInGroup function as I saw it as a way to resolve my issue. I honestly wasn't thinking that my firsts tests were against the machine I was running the script on.

I'll do some more digging to see if there is anything that would allow me to exclude all the servers I want to exclude. If anyone has some ideas or could point me in a direction to look I would much apprecaite it.