Just to point out that a Finnish consumer rights body have ruled Sony was in the wrong for removing Other OS and ruled that the plaintiff should be paid 100 euros by Sony and the people from whom he purchased the device.
Now it was in finland but I wonder if it may prove useful to graf's lawyers should he go ahead....
Also a court would be needed to force them to pay out said 100 euros...still if we all made complaints, were all awarded money back and donated even 10% of it to graf's legal bills it'd be quite poetic wouldn't it?
Sony would be paying for graf's lawyers! ;-)