Simple answer was up until today, no. This late discovery unlocks yet more power in Motion for the building of plugins for Final Cut Pro X.
MotionVFX has just updated its popular mFlare plugin for Final Cut Pro X and Motion. In mFlare 2 you will find many more real-life flare elements to choose from, an improved colouration system and of course Mocha tracking.
Tiliam research has taken the technology from their standalone stabilisation app called MotionBend and released a plugin for Final Cut Pro X and Motion.