As far as I understand, this is the "correct" procedure for HM now. Through the main queue and stretching room, and then taken to the back (where people get off of the ride) through a side hallway. Once in back the Cast Member can slow or stop the attraction to meet your loading needs. They are not able to do that in the main loading area.
For me personally, my back can not tolerate the trip over the cobblestones in an
ECV or Wheelchair. I can do a fast trip over a small strip of them but the full queue of cobblestone ground puts me in unbearable pain. That means that since they have stopped allowing Guests with GAC to go in the exit, I have to be having a "walking day" to get through the front queue. While they were changing policy I made several Disney trips. The first time I went over the cobblestone, and had to leave the park (which was really a bummer because I was there for
MNSSHP) Guest Services told me that next time to get an alternate entrance GAC. The next time I had my GAC and was ready to go through the back and the CMs stopped me. They actually yelled at me, there was a huge humiliating scene, imagine a very large male cast member standing over a woman in a manual wheelchair shaking his double pointed fingers in her face shouting. Yep... very magical. (I want to make it very clear though that the situation was handled by management and Disney made things right with me.) When I went this past trip we went early in the day so that I could handle standing through the main queue, I had a GAC and talked to the CMs. No one told me or directed me through the side hall so I was jostled through the main path and had to navigate and jump on the moving walkway. I was very lucky and didn't stumble and fall (as I have in the past) but I was fairly upset and freaked out. That's when I finally was able to talk with someone who explained how things are supposed to work.
In every instance of trouble I have had I think that a lack of communication has been the problem. Communication from management to Cast Members and Communication from Cast Members to Guests, and perhaps even communication between me and the Cast Members. I would like to think that now I know how it's supposed to work that I could finally go back and just enjoy the ride, but I would still have to leave my chair or ecv to walk the main queue.