I'm still not entirely convinced he was a fraud. His behaviour was pretty odd for a "normal" person and I don't see what he was hoping to gain.

As for some of the reports in papers that make it sound like he was conning them over his piano playing ability, that can in no way have been a con job from him. It's hard to credit that the staff could not tell the difference between one finger playing and a virtuoso pefromance which have been the extremes we have seen reported.

A better view (IMO) is at here