s**t. I'm clear over by Pittsburgh, or I'd be happy to hang out with your kid. I've got some friends near Frederick (Shepherdstown/Martinsburg WV, actually, but close enough for horseshoes) that could probably hook him up-- they're all in the over-30 set with no kids, but they hang out at a comic shop that seems to be an ASD teen's paradise (and one's a probable schizoid while I'd bet the farm that the other one is ASD himself).
You say "DC metro area," so I figure Frederick or Hagerstown is quite a stretch for you. However, it's what I've got to offer, so I'm tossing it out there.
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"Alas, our dried voices when we whisper together are quiet and meaningless, as wind in dry grass, or rats' feet over broken glass in our dry cellar." --TS Eliot, "The Hollow Men"