1. The woman seems like she was just trying to cause trouble. Was she doing the right thing? Probably not. But the response was equally stupid. Be the chacham. (from Avi K’s story)
2. If you want to separate people, the best solution seems to be the right side/left side separation.
3. Having women sit behind men is also a viable solution. To me, walking behind a woman seems very very different than sitting behind a woman. And even that problem is only for the people sitting in the frontmost row of men, the only ones sitting in a row directly behind women. If you want to set extra gedarim for yourself, sit further back.
4. Zahavasdad: If they weren’t just trying to cause trouble, her spouse (probably not actually married) would have just sat next to her.
5. Ayid: great point. For all the machmirim, just bring an eye cover.
6. Joseph: Wow, you seem like a really pleasant fellow.