Naw, don't agree. On the long version you can see the airboss talking on the radio right before the camera pans to the left and see the bipe.. He's talking about the current pass. I don't see any reference to an earlier pass. Even so, if there was an earlier pass it doesn't excuse the airboss from not grounding everything!
If you listen, after the collision the airboss is talking to the bipe and he says "I didn't know that you were going around" referring to the collision pass... At the end of the vid the airboss is talking and says that the bipe didn't annouce the 'go around' and that he told the bipe to break left on that pass.
As for being a different pilot and not happening. All you have to do is look at the links in the post above to see that this has happened before.
I know of one local incident. Fortunately the full scale pilot was able to avoid the model! & guess what, it was a regular sport/warbird pilot involved...