Well, that appears to be it. After 28 rated tournaments, and finishing with a USCF rating of 1920 (80 points short of an EXPERT rating) Allen appears to have stopped playing. His last tournament was more than a year ago.
I haven't heard anything about the big bet... I'm guessing it never materialized.
And now, after more than a year off, Allen would have lost whatever edge he might have had. I know from experience after you stop playing for awhile, you're just not as strong.
Too bad. Allen, at his peak, would have given Howard a good game. I would have enjoyed seeing it.