While you're on point to be cautious here, it is not uncommon for major shareholders to step down from administrative positions as they seek a more relaxed lifestyle in retirement. I, of course, do not know the man personally so I cannot speak for him, but I would imagine that he simply wishes to be involved with the company (and his patents/inventions) on some level.
Without knowing the content of your e-mail, it's tough to say why you were redirected.
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