Hmmmm, interesting!
The Catholic religion is FAITH... Faith is something we believe in, right!
Thinking about that remark, "God is not Catholic" ... When we are in Heaven we don't need Faith, because we KNOW. God who knows all things does not need Faith.
The Catholic Church was founded by God, as a path for mankind to reach Heaven, and God proved it was the only path, the true path, but in heaven are we still Catholic because we will not need Faith anymore, since we wil have an all perfect knowledge.
Not defending the priest because he is giving bad example by his remark, he is indeed sinning in my opinion by saying that ... but when we reach Heaven we will all be Saints, not needing Faith anymore.