Allen blew puzzle solutions, but was apparently not very smooth about it, so they felt it was better to edit it out. So, I guess, it's a matter of, if the host comes off more flustered and it impacts the game, you want to make the host look good despite the mistakes. Louie Anderson apparently made many mistakes hosting Feud, and they were always edited out, because he couldn't find a smooth way out of his mistakes. Tom Kennedy's classic "French" incident was an instance where an illegal clue mishap, paired with Tom not knowing how to handle the mishap, only got funnier and funnier, thanks to Dick Martin. Tom kept trying to start over because he was assuming that none of this was going to be seen and tried to regroup, but each time it just seemed more hopeless, but of course they did manage to get back to the game, only for it to briefly derail again when Dick gave ANOTHER illegal clue for LOST. It was a good call to leave in the whole thing, because then the audience wouldn't understand why they are still unglued with laughter when they're having difficulty with the other passwords in the puzzle.
