At 00:53 you can see the flywheel..(on the left side of this thing - so I guess it is not a M400).
Check out the pitch dives he does after about 2:30........
http://www.youtube.com/watch?v=4Qlm4v6i80c
Yeah, come to think of it - Mike Pinder also played country steel guitar 'Tron effects on "Send Me No Wine" on Threshold of a Dream...