Ok how about this. . .
As a Christian (Confessional Lutheran) Jerry Falwell was a heretic who distorted the Christian faith in a way such as to suit Satan's whims.
He understood and taught nothing of the gospel but only law and condemnation. At every turn he failed at the great commandment, he was a serial violator of the commandment against bearing false witness (8th commandment by Lutheran and Roman Catholic numbering, 9th by Reformed Protestants) and refused to apologize or repent for his violations. He is for me the definition of Anathema.
When Christ himself warned of false teachers and wolves in sheep's clothing, Falwell and his ilk are what he was warning of. He taught what itching and hateful ears wanted to hear and not the true word of God which teaches us to not bear false witness, to love our enemies, and to forgive as we have been forgiven.
I have sincere doubts that his soul was in any condition to receive mercy due to Matt 6:15. I prayed that his soul was in a condition to receive mercy as any true Christian would not wish hell upon his worst enemy (unlike Falwell who did gleefully wish it upon others). However Matt 6:15 gives me strong reason to doubt this.
A person with such a stunning lack of love for his fellow man, a person who repeatedly violated the 8th commandment with no repentance for his violations, and one with such a stunning lack of ability to forgive is most certainly hard to imagine to be among the communion of the saints and quite easy to imagine with Satan and his reprobate.
I feel compelled to warn you that while it is important to recognize sexual sins such as fornication, homosexual acts, and other common sins such as taking God's name in vain and divorce it is also equally important if not more important to understand that God is love and he expects his followers to demonstrate love. You can't demonstrate it perfectly no one can, but repent of your failures and demonstrate it as best you can. You must also show mercy to receive mercy. Forgiveness from Christ can not be obtained by the unforgiving.