Doubtful.
If Hitchens is taking a dirt nap, he isn't sentient...period.
If he is in hell, he has other matters to worry about.
If he did convert at the last minute, he must feel horribly ashamed of his great anger toward believers and his behavior here on Earth.
That said, if he is in some parallel universe we are thus far unaware of, he might be pleased...but I doubt it.