I have a copy of Lightwave 11.5... I won't say how.
I've managed to pull together an MOT file, which is a global motion file, essentially a csv, based on the data from the calculated figures from a mobile phones sensors, which works (ish), but isn't as precise as needed.
I've got a friend who commercially works with 3DS Max so I'm draining his mind for details on what he would need for getting a motion path into that.
I've got a conversation with a company called Willow Technologies tomorrow, who should be able to give me more details on some of their tech.