Distributor problems

What on earth would cause a distributor to fail at the base of the shaft? See pic. Car had not been started in years. IT turn over easy… pulled plugs… put some light lubricant in cylinders turned over by hand several times each day for over a week. Changed oil and filter. Finally tried to start. It ran for about 10 seconds then stopped. The distributor had twisted so much it apparently snapped the lower section off. And totally cracked the distributor cap in half. Is it bad distributor or a larger issue inside the engine? The rotor turned like normal when I was rotating engine by hand.7E472D99-623E-4936-8306-E3DAB9067685.jpeg