Actually, there are two main points in that study that you are overlooking.
One, that study is only for pertussis. They are still actively saying you should get vaccinated, just more research needs to go into that particular vaccination. No correlation has been demonstrated for MMR.
Two, the key word is "newly vaccinated". Their thought is that newly vaccinated people may spread it to infants who are unable to get vaccinated yet. They are saying if you are newly vaccinated, there's a very small likelihood that you may spread it to infants. However, you won't spread it to already vaccinated people, and after some time, you won't spread it at all.
Not to mention I'd wait for further research and I'll have to re-read the actual paper instead of some guy's blog. For things to be concrete, we need multiple peer-reviewed studies and on more subjects than baboons.
I'll probably get flamed for this, but people who don't vaccinate their kids for "constitutional reasons" are idiots and I question their competency as parents. Don't put your kids and other kids at danger for your own idiotic beliefs (Not aimed at you MM by the way since I know you're having no say in this and are just peacefully arguing both sides).