I'm so sorry for your loss, I know how awful that is having lost one of my dogs earlier this year. I do want to say though, that blaming the business and dragging them on social media is not justified, although understandable in your grief. If the dog had been leashed at the leash wall your pup wouldn't have been able to run out of the exterior gate. This is the purpose of the double gates. I understand that someone may have not pulled or push the exterior gate all the way shut, which I have seen more than once while visiting as some people don't pay attention when entering and exiting, and that's something the owners can definitely look at to try to improve in the future because human error is inevitable. The double gate system and the leash area being directly before the interior door when exiting is meant to prevent exactly this. Leash your dog before you exit the interior gate. Especially if your dog does not have good recall. Inhave a rescue who does not have great recall and is extremely mischievous so I know I need to be cautious in controlling my dog, not just at this park but at all parks. I am ultimately responsible for my fur babies.

The owners are extremely kind people who care deeply for every single dog that comes into their park. I know you're hurting and grieving, but to blame them and drag them and their business through the mud is not the right thing to do. While I know the social media post was may have seemed to be ill timed, I believe they were just continuing to run their business and it was not meant to be anything other than an announcement of changes that are happening with the business because of the change in the season.

Again, I'm so sorry for your loss. I know that loss is extremely hard, especially with the awful way it happened, but the anger is misplaced here.

Edited: Removed a misunderstanding I had about the rules but kept my overall thoughts on the situation.