This should never have worked. I first loaded the 8x10 sheet film in the holder backwards-base side out/emulsion side in. I have never done that before. Exposed film. Realized film was backwards. Put it in developer tray anyway. Then for reasons I could not explain I turned on the light. Left it on for about 10 seconds before I realized that was not recommended for a sheet of film in a tray of developer. Turned light off. Finished developing film anyway.
Film came out.
A little solarized but it's quite a printable neg.
I have no explanation.
I think the photo-gods like me.