>>>His belief, and mine as well, is that "Grover" 1) acted for unknown reasons; and 2) faked Michel out completely. For sure we don't know how or why it was done. There are any number of possible scenarios besides the one you describe. Kevin could have been chosen semi-randomly as a high profile forum member.
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>Do you have examples of this ever happening before in real life? I know there are plenty of thrillers where false trails are laid to implicate the butler or for revenge by a jilted lover, but we're talking about a tricky online subterfuge lasting months and requiring a monumental investment of effort for such a petty result.

How do we know it took months?

I am shutting down the computer for the night to let the tubes cool off. (What? No more tubes?). In fact I am reading an actual thriller and look forward to returning to it. (Shameless plug: Walter Mosley).