Willa:
Mite's response to the IM intervention tells me that there is something going on in the vestibular system. I often have to modify the IM program and use SI based techniques to "soften" the impact. But his response was most definitely the most significant response I've heard of to date. How old is he again (I'm sorry, so many kids on the boards, I know I've seen that somewhere before but can't remember).

If he is 9 or under, I would most definitely seek out an SI certified OT to administer the SIPT and identify or rule out a somatosensory basis for the dyspraxia. This could be present along with a higher level problem (ie: LD).

Have you heard of Therapuetic Listening? Sometimes this is where I start with kids, before moving to IM. Find info here:
www.vitallinks.net

Does he exhibit movement based anxiety? Like fearful in large rooms or of his feet leaving the ground? He may have an otolithic dysfunction (vestibular function) that is contributing to his dyspraxia as well.

Are there any pediatric clinics in your area with SI OTs?