Spun cam bearing...

I snapped a cam in an aluminum OHC head that had no cam bearings. Oil starved and seized it up. Only think I can think is oil starvation to that journal. Possible?

Well it was rather my stupidity that added a lot to it. I was taking the pan off to look at the main and rod bearings, I put assembly lube on them after inspection. I was a smart *** and did not prime the engine after. Ofcourse my oil gauge did not show oil pressure right away...
Now I'm having all the fun. Just realised that these two things are linked. Prime your engines after you do stuff like this, learn on my mistakes.
I should be back on the road next week but I feel like an ***.