Just want to say that this is a good response, and I'm happy to see the communication here along with acknowledging that you guys failed to communicate this enough ahead of time. I hope that HN is receptive to this communication, so we can continue to see more of this.
No it's not a good response. Shoot first, ask questions later? They should have a) let the developers know what they need to fix the apps and b) stop these apps from posting to the wall (not ban the apps altogether)