Collision and base tagging

[Gee]

It all comes down to your judgment. It appears from your post that you could clearly separate the tag and the collision. Assuming F3 had full possession at the time of the tag I have an out as post tag evidence is inadmissable.

If the tag and collision happened simultaneously then you have a 'no control at time of tag' and a safe but that didn't appear to happen here but again, it is your judgment. G.