1967 Match Race 'Dart GTS 383' vs 'Firebird 326 H.O.'
I experienced the center bolt shearing first hand more than a few times.
Quite violent.
Only a grandma could drive a car more than a few miles with a broken center bolt and not have the rear axle moved back on one side far enough to pull the slip yoke out of the transmission.
I don't think that was the cause of the main dog tracking issue, although they certianly dog tracked like hell when that bolt sheared.