Software Deployment

Updating Shockwave in our business environment and trying to get rid of all older versions. I've written a package in Wise Package Studio 8 that uninstalls the older versions, except I'm having trouble with one version, which is listed in the registry as Shockwave Director 8.5.1. My uninstall string is this:

C:\WINDOWS\system32\Macromed\SHOCKW~1\UNWISE.EXE /S C:\WINDOWS\system32\Macromed\SHOCKW~1\Install.log

That works, but the uninstall forces a reboot, which we don't want to happen in an effort not to disrupt users workflow.
I've tried throwing all the parameters I know of at it--/noreboot, -noreboot, /REBOOT=R, /REBOOT=ReallySuppress,and so on--but so far none have worked.
Just curious if there are any other tricks I could try.
I should also note that I've tried creating an uninstall package using WPS8 and AdminStudio, but something about the reboot seems to be problematic--AdminStudio never attempts to create an MSI post-reboot, and Wise creates an MSI, but doesn't capture any of the file or registry changes that happen after the reboot. I was going to try creating a package manually, but there were approximately 2000 reg changes, and so that idea went out the window because I don't have that much time for this project.
I reckon worst-case scenario would be get the PCs running this version of Shockwave into a separate SCCM collection, then do a special push just to those PCs, and attempt to notify the users in advance that we'll be rebooting their PCs.