Apologize and move on.
TCM is right. Texas Fossil deserves an apology. You do not call a man a liar when you have no direct knowledge of his character. You may have trouble believing him, but that does not make him a liar. Calling someone a liar is no small accusation. I do not think FR is the kind of site which supports this kind of behavior. Consider reading Rev. 21:8 and think of what you have said about Texas Fossil. Words matter.