From what I have read, the evidence is overwhelming that there is no correlation between pedophilia and homosexuality. Anecdotally, if you look at the priest abusers who were true pedophiles, like Fathers Geoghan or Shanley in Boston, they abused both boys and girls.
However, there is a definite correlation between ephebophilia and male homosexuality. And that's why in the abuse scandal the overwhelming majority of the post-pubescent victims were boys.
The sex abuse scandal in the Church was mostly one of ephebophilia, not pedophilia, even if the most high profile cases were that of true pedophiles. Hence, since it is well-established that ephebophilia is correlated with male homosexuality, it is undoubtedly true that most of the abuse could have been avoided if the Church had kept homosexuals out out of the priesthood.
On the other hand, since true pedophilia is not related to homosexuality, you cannot use this scandal as grounds to exclude homosexuals from being kindergarden teachers, for example.
Opps nevermind. To them they have already had indoctrination that it is the obvious repression of religion that is cuasing the abuse, so the education wouldn't take.