Gleeful ghoul Dave Palumbo explains how Chick was fired (11 - 20min in, with 11 - 17 being the meat of the subject) -
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Funny things of note - 1) Palumbo's Chick impression, 2) Chick made things worse by threatening to strongarm the promoter according Palumbo, 3) Palumbo implies that Chick is getting old, and believes doing a full day of announcing is below him, and perhaps he'd be better announcing for smaller shows. 4) Both Palumbo and Aceto imply that Chick is lazy, and maybe it's time for new blood.