Yes, there are some, but I don't believe they are in as great numbers as have been suggested.
All that being said, these priests in the Salesian order in the Netherlands are NUTS! They are the result of liberal influence in their order, and the Church in Europe, for many years. Attitudes like this are the reason Pope Benedict stated as one of the issues he wants to address during his Papacy is the RE-evangelization of Europe.
Well, then, there's another issue then and that would be the integrity of the priests responding to the surveys.
Just why would they lie and say that they're gay if they're not? Even considering that I could not even imagine someone who was not homosexual claiming that they were, they'd have to realize how that would reflect on the Church if they claimed it.
So the choices are that either the priests really are homosexual at the rate which they are reporting or they are liars at the rate at which they're reporting being homosexual.
Not a good scenario either way.