I don't support A&E's suspension of Phil Robertson.
But pretending it's a Constitutional issue is pretty dumb. I don't see any mention of private companies in the First Amendment.
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
When Congress passes a law that "suspends" Phil Robertson, then you'd have a First Amendment issue. Otherwise, not so much.
I don't necessarily see the "Free Speech" issue either; However, we tolerate Miley Cyrus and her "antics" in the name of free speech yet, when a person of faith expresses their beliefs - it suddenly is the end of the world (at least to butt burglars) and considered "offensive".
Personally, I'll take what Phil Robertson said any day of the week (primarily because I agree with the man) over the twerking, semi-pornographic stylings of a child such as Miley Cyrus. If, in the mind of the butt burglars, what Robertson said is "atrocious" then seeing that 18 year old ***** undulate and gyrate on national television is a national disgrace.