Lucky that came out!
I had a motocross bike that the bolts corroded into the swingarm and both broke when I tried to adjust the chain tension, I had no way if getting them out so took it to an engineer, afterwards he told me it was the worst job they'd ever had and never again, 2 guys spent over 4 hours getting them out and re threading it.
All because none of the previous owners had never bothered pulling them out and putting on some anti seize or a generous amount of grease. If you haven't done yours get out in the garage and do it now!