You want a nice straightforward and effective way to selectivly decrease the amount of motion blur on individual objects in your scene?

Of course you do!

You want simple? It's a motion plug-in with three controls, no waiting. Just decide how de-blurred you want things. 100% is normal blurring, so you won't want to use that unless you're creating an envelope. 0% is no blur, and in between is....well....in between. Take a look at an example...

You even turn the scale up past 100%, and increase the blurriness. Take a look.

It doesn't get easier than this. Go get to work!