"A very good friend - no wimp, an ex-Navy Chief - was doing substitute teacher duty when one of his little charges had a similar tantrum. The guidance then was to wrap them in your arms until they calmed so they wouldn't hurt themselves or anyone else thrashing."
Was that recently? I've heard from teachers that they can no longer touch a child in any way. Not even a simple one armed hug.
The little guy actually apologized, and by all reports was fairly well-behaved afterward. Go figure.