Yeah the only situation in OG I remember also, and everything like sami said.
In the end you can be grateful to the fg hibs, as we all chased the grp, and a few more hibs appeared in front and the whole midzerg went into "wOOt my rp!111"-mode and just chased, and didn't realise that a LOT more hibs engaged from the side/behind.
I did not realise either, as I had my UI off for a good video record. As I realised we are in trouble it was too late to get the midzerg to turn back together.
If we had any intel about your nunbers or whereabout, we would not have played it that stupid. Indeed we went OG for a small albzerg reported there.

edit: and the real sad part about it... my fraps capture of that fight is corrupt (the split at 4 GB seems to have failed), 6 GB of the best fight of the evening lost
If it would be ok, I guess I could show you our bg chat as well as all my tells, and that was all info I got, not a lot.

Ha, I managed to repair the fraps file. Only the last fight at grallahorn is still corrupted and can't be repaired. I will try to make the video maybe next week.

Here is my proof we had no spy intel about a hibzerg in OG: https://youtu.be/8LvmCSSDS_g
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The real video video may come tomorrow.