Ian,
I'm not sure you'll actually need to uninstall the View agent so much as just reinstall over top of what you have. The View Admin guide seems to point in this direction too, simply has install steps (vmtools followed by view agent), no uninstall steps. The rest of your steps sound correct; however, I'm not a composer user, so I can't offer any additional insight into what would be most likely to result in success.
Jeremy Ey
