The tranny is toast. I remember when my old 01' odyssey tranny went bad, it started slipping around the same area as yours. I was lucky enough to have Honda warranty the tranny even though it was out of warranty for a couple of years at that point. Your best bet would be to speak with a shop that specializes in Honda automatics. The old trans blew up so often that it shouldn't be hard to find a shop that can do the rebuild.
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