Ok so for anyone doing this here's what I did that works:
Created a "design suite" equivalent for our purposes but it will work regardless.
1) create install package with Adobe's packager. It creates and install build and an uninstall build.
2) import the install and uninstall build.
3) Zip the install build. Failure to do so will have MUNKI create an install Pkginfo file that will attempt to RUN the uninstaller. You don't want that. So zip the Uninstall pkg. I used Apple's package maker to install the zipped file to /Applications/Utilities/Adobe CC Uninstallers/.
4) in MUNKI set the uninstaller pkg as an update for the install pkg.
5) As a post install script. Unzip the installed Uninstaller zip file to the same directory.
6) as a preuninstall script run "installer -package /Applications/Utilities/Adobe CC Unintstallers/{name of uninstaller} -Target /
Now whenever you install Adobe CC the uninstaller will be in place. When you ask MUNKI to uninstall CC it automatically uninstalls all the other update items, including your uninstaller pkg. The uninstall pkg will uninstall and run it's pre-install script which properly wipes the Adobe CC install. Then the Adobe CC uninstall happens, which of course does nothing more than tell MUNKI that the suite shouldn't be checked as installed.
Hope this helps any new people to MUNKI.