Bleh! Thunderstorms in the area today. I read or was told somewhere to unplug my antenna at the radio when there are thunderstorms. How much truth is there to this or how much is myth? Is it just good general practice?
Considering, by your pictures, you didn't have the Antenna (mast) grounded - it wouldn't hurt to be safe. In real life - you shouldn't allow anything (coax) into your house without proper grounding to an outside location (before) the coax leads into the house. Prepare yourself for a bunch of responses to this one - their are a lot of opinions about protecting your equipment from lightning.
... make sure the coax is OUTSIDE your house when lightning is around....
just put the end in a mason jar