It appears that the international pressure has made a difference - sort of.
First, the good news: President Museveni has refused to sign the bill into law.
Now, the not-so-good news: Museveni still believes that gays are "abnormal" and unacceptable, and he still wants to eradicate them. But he says he wants to employ other methods, specifically economic ones, to address the perceived problem.
I'm not entirely sure what economics has to do with sexual orientation, but a friend pointed out to me that the U.S. and other countries threatened to stop aid to Uganda if the anti-gay bill were to pass.
I guess that shows that money is more powerful than even deeply entrenched bigotry - at least to some extent.