Yes, just reload and re-run, you don't need to manually unload any modules. I'll put that in the help file.
I'm changing xxutils to be a "single module" rather than multiple ex files, to make the plugin easier. For this situation (and some others) it's necessary to manually unload the ex files and also to remove unwanted files from the tag file. I'll make this clearer in the help file. Once you're using the plugin you don't need to manually do anything, except load or update the plugin.