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Piniella/Dibble? I don't remember either guy getting suspended there. Though Lou did get fired later that year, IIRC (which is why he was available to us - thanks Rob!). And NOBODY should take Marge's example of how to run a team under any sort of advisement.
Did anybody get suspended in that famous Reggie Jackson/Billy Martin blowup? I doubt it. Nobody suspends Reggie.
But I'll grant you it isn't common, and it usually signals that the manager has worn out his welcome if the player gets off scot-free.
~G