I don't think you broke anything. The ball joint will spin with the nut unless the joint is firmly pressed to the spindle. I didn't have the problem taking it off, but did have it putting it on. I used a large C-clamp to hold the joint and spindle together while turning the nut. If the joint and spindle are pressed hard enough together, the joint will not turn with the nut. If I'm understanding the situation correctly, I don't think you are in panic land at all. 
My upper control arm misadventures were extensive. If you didn't need a sawzall to get the arm off the frame, you're doin' OK.
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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
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