Regardless, he hasn't been able to get Uxstyle installed, so it can't uninstall what hasn't been installed.
What I'm saying is, "When" the system is patched using UXStyles, running Dism.exe /online /Cleanup-Image /StartComponentCleanup&sfc/scannow&Dism /Online /Cleanup-Image /RestoreHealth&sfc/scannow&pause uninstalls it and repairs all three patches back to their default settings.
Have you tried rebooting already and then patching? Maybe your system has some changes pending, thus, not allowing the patch,.
And again, running this in order to get a cleaned up state so he can install it is the goal, even if it did uninstall it, it wouldn't matter because he hasn't got it installed yet.