Any Case Study of Reversion of Canonicalization?

[globalsources.com]

Hi,

Understand that if a Page A is being canonicalized to Page B, most probably Page B's ranking will increase (given their content and structure are all the same).

But when the canonical tags are removed from Page B, Page A's rankings and traffic may recover to the original before it was canonicalized.

The theories seem very true but does anyone have any case studies or direct experiences which proves these theories?

Thanks.

[StalkerB]

Only thing I can think of is Dr Pete's experiment - http://www.seomoz.org/blog/catastrophic-canonicalization - but that's not quite the same as the example you're proposing.

I think you should still get a good idea of what happens after removing canonical tags though.