As a Christian and a Catholic, he is obligated to speak out on Beck’s Mormonism, you can’t fault him for that.
We Catholics of course cannot accept the teachings of Mormonism. But that was not the issue. It was Shea’s ad hominem on Beck, his admitting that he watched him just a couple of times, and his utter dismissal of any valuable contribution that Beck has made, warning Catholics to find their information elsewhere. He shoots from the hip upside down facing backwards on a galloping horse, and he misses the target but thinks he hit it.