I've never had the issue you describe. However, I did have a rotor and power door lock replaced. And, the power door lock was repaired even though it was outside the warranty period. So, I wouldn't say HAH owners are being written off. As long as the problem is diagnosable.
But, I do sympathize with you and your problem. My Odyssey had a strange swaying when going over certain bumps. It was hard for me to duplicate it with the tech in the car. The first trip to the dealer I reported the problem and when I got the vehicle back was told the tech couldn't find a problem. The second time I took it in, I had a tech ride with me and he said he could feel a slight sway like I was describing. After further troubleshooting, they were able to discover that the passenger rear shock was slightly leaking. After replacing it, my swaying is gone!
It's a lot easier to fix a problem when you can find it.
Good luck on your troubleshooting!
