Beerpig, so far as the blade plate is concerned, can't you just bend the ends of the plate down with large shifting spanners? Of course you'd have to bend two opposite sides of the plate at the same time, so you wouldn't bend the center spindle.
With regard to removing the right rear wheel, I think I know how I'd do it, but there is probably a better way so I haven't suggested it. (I think I'd make a flat plate puller out of 3/8" or 1/2" steel plate, drilling four holes in it on a pitch circle diameter just big enough to give a useful clearance around the wheel hub, then I'd use that puller as a template to drill four matching holes in each wheel disk. Then I'd run a bolt through each of the holes, from the flat plate through the wheel, with the center of the plate resting on the end of the axle shaft. I'd put a nut on each bolt on the back of the wheel. Then I'd tighten the four bolts evenly, until they were applying a fair amount of force on the end of the axle shaft, pulling on the hub. Then I'd tap right in the center of the flat plate, directly over the axle shaft, with a hammer.) If the dealer has a better way to do it, please post it here, so it will be in our archive for the next person with a similar problem to solve.
