About the only thing that would cause the rear tires to move at all would be if the rear suspension bushings are shot. If they are worn to the point they shift that much the alignment won't do anything. The other thing to check would be that the wheel lugs are tight. If those were not torqued properly and loosened up in motion it could cause some strange behavior.
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Monday, April 8th, 2019 AT 5:51 PM