Khawk,

 

Was Hennig vs Hansen a planned match or did Blackwell really get injured screwing up a long-built Blackwell vs Hansen match?

I don't know for sure. Blackwell had so many health problems in that time frame that I imagine the injury was legit, but Blackwell-Hansen was probably booked (or held onto after he got hurt that time), hoping that Blackwell would be ok to go and Hennig was the backup plan if he couldn't go.

I can't think of another example off-hand, but the principle remains the same.