Mentor on Retainer

There was a really weird phenomena going on while I was shooting a ladies lacrosse game last week. Now, I'll start by saying I not new to night sports photography. I know what weirdness typically rears its head while shooting in low light. Sometimes these cameras have a mind of their own... Actually, that is probably more true than I mean it to be; these things are computers and Ive heard rumblings of computers taking over the world and making humans their slaves.. Ive seen Terminator 2! 
I digress. I was shooting at night under the lights of a football field and all of the sudden my photos started having these really bizarre highlights to them. Almost as if the shutter was going so fast it was actually able to see individual colors in the spectrum. Very strange. Ive never had this happen before. I was shooting with a Sony A9 and a 70-200 2.8 G Master. I tried to change my shutter from electronic to mechanical, but that didn't help. OF COURSE this was very close to the climax of one of the best ladies lacrosse games Ive been to this season because.... of course! Luckily I had my backup A7iii with me. I hurried and made the lens swap and the color thing stopped. The problem was my settings were set for video on the A7iii so I had to hastily try to bring my photo settings current. Uggghhhhhhhhhh.... Not sure what was up. Sometimes I wish I had a photography mentor on retainer.