Could simply be a piece of debris floating in the mix around the twister. It's really hard to get any sense of direction and distance from that video
as there is very little to relate it to. In other words, I'd be looking for a more terrestrial explanation.
It was shot in oklahoma city on May 3 1999 during the massive tornaado that ripped apart oklahoma city the one that was a mile long i would know i was
there!
Many of the results on that search (but not all) are regarding the very same Rods. You should get plenty of info you seek starting there. I know
because this one Mysterious Skyfish? is a thread I made long ago.