re: Ejection in the Arky/Vandy game

I watched it in live action and I thought he was calling for a fair catch.
Then, in the replay I could see he might have been blocking the sun. I was expecting a 15 yard penalty but no ejection.

Historically, how many times do you see a punt returner blocking the sun with his hand? Done all the time in baseball but I would think PRs are taught not to do that as it will be interpreted as a fair catch.