Oh, poor little guy.

And no, your husband is NOT a nut job . . . I'd be thinking the same thing.
Was your son sedated with oral meds? Is that what you meant by "mean drunk"? My son was 3 when he had surgery and had po versed and he was a "funny drunk" . . .loopy, goofy. He was sedated when the IV was started.
Yes, saline locks can go bad in 1/2 hour.
Give him another big hug from me and also to your husband and yourself.
steph