Strange days

Yesterday I picked Will up from school early to find him waiting outside his classroom door with staff. He was sucking his thumb... I haven't seen that in years, usually he rubs either my fingernail or his own back and forth across his lips. This has been a calming technique for years but only when he's really upset. So you can understand my confusion.

When I asked him what was going on he told me he didn't know. He was kind of all over the place with staff. Once we left for Disney, he was a perfect child. He listened, he accepted limits (I'm not made of money and Disney souvenirs are very expensive!) and handled his disappointment very well.

Today he made it through school successfully, no real bumps to speak of, and considering his late night the night before I wouldn't have been surprised by one. I did get a call when school ended saying that he refused to get on the bus for home because another child in line called him a jerk and hit him with his bag. I don't know what the whole story is because no teacher appeared to witness the altercation and Will can get stuck on what he perceives to have happened, not necessarily what DID happen. That does in no way mean I am dismissing Wills account, only that I know he isn't always 100% accurate in what happens- although it is true for him. I picked him up and we went home.

He appeared to be in good spirits, but about an hour after his staff arrived he started acting like a baby, crawling around on the floor and making baby noises. He spent almost an hour refusing to walk and/or talk. It makes it really tough to know what's going on when he won't tell me. Problem is? Even though he is high functioning, extremely smart, and has great verbal skills: I think when we have the temporary regressions (I have no idea what else to call it because its clear that its more than a game or play) he really seems to be unable to get or ask for what he needs any other way.

Does anyone else experience this with their kiddos?