You asked: "Also, anyone familiar with Autism, Why would the surgery have made him worse? Or maybe it just seems that way. As I said before he used to spin in circles now he just lays on the floor and has the saddest face on, it breaks my heart!!!"
If the boy does indeed have ASD, then he very likely/possibly also has Sensory Processing Disorder. That would mean that when he had tubes put in his ears, helping with the drainage, he was better able to hear suddenly. That can be VERY shocking to a little boy with ASD and SPD, and if he's not getting Occupational Therapy or any other approved therapies it's going to be nearly impossible for him to cope with the sudden change of better hearing.
It's likely, to me, that he might do well with some Sensory Activities to help him. They could be simple activities, such as dried beans or raw rice in a Tupperware container and the task is to locate tiny army men or coins or keys with his fingers. One activity my ASD daughter enjoys is water play. She used to love her water table and sand table. Now that she's 10, she just fills the sink with water and plays with dolls in there, or she'll run water over her hands, fingers, and wrists. You can also find sensory toys online at web sites geared towards occupational therapists and teachers that have students with sensory needs. Sometimes, it's as simple as bouncing on a mini trampoline or swinging on a swing for a short time.
What I would do first, though, is speaking with someone in generic terms about the situation to the school psychologist of the local elementary school and/or whoever heads the Special Education Program there. They should be able to offer some advice to you on how to approach the parents and maybe even offer to join you in a meeting. When my daughter was in preschool the preschool worked in tandem with the school she was going to attend kindergarten with.
The thing is... I was receptive to the help. I was receptive to the diagnosis, even when it crushed me. My goal was to help my daughter as early as possible, and watch and see if the therapies that were geared towards ASD and SPD would help or not. When they did I knew we were doing the right thing.
ASD is a very scary diagnosis. It's daunting. And in the climate we have right now with people wanting to place BLAME for what causes ASD, we have a lot of parents that feel guilt for one thing or another: something they did or didn't do during pregnancy; not recognizing signs of it in their family; getting their children vaccinations even though ALL RELIABLE RESEARCH indicates there's no link; guilt for what we're feeding or not feeding our child; guilt for whether or not we breastfed or how long we breastfed; guilt over whether or not we had a medicated delivery or a premature delivery or drank coffee during pregnancy or ate a tuna sandwich.
Then there's guilt over not recognizing it sooner.
Then there's wanting a cure. Then realizing that a cure would change your child completely and you don't really want that. What you want is help. And realizing that the diagnosis didn't change who your child is, it just put a name to the difficulties your child is having.
So maybe if you can approach the parents in a way where they understand that your main concern is helping their child.
"Mom and Dad, I know that maybe you disagree with the ASD diagnosis or maybe it's really scary. I have some resources for support groups for you, and I did some initial research for you for what the transition into kindergarten with special services would be like. The diagnosis entitles your son to services that are free, even if you disagree with the diagnosis... and if the services help him and his behaviors and issues and ____ and ___ improve, then wouldn't that be a good thing?"
That could be a way to start the conversation. Explain to them what a PPT is, and what an IEP is. Explain to them how they can get him started with services through the public school NOW so that he's already established with them when he starts kindergarten and it will help him with the transitions. It would also entitle him to free summer session/summer school, which is extremely beneficial for children on the spectrum. It helps them retain information they learned in the previous school year, catch up on anything they might have missed, and hopefully get a small jump on the coming school year.
This means some leg work for you, but also maybe establishing a really good network for your preschool and strengthening your standing in the community.