>> This is certainly unique. I’d never before heard anal sodomy defined as a sacred act which should not be separated from the Sacrament of Marriage.
I wasn’t discussing anal sex specifically — but extra-curricular sexual practices generally. Generally speaking, all sexual activity (within some reason here) — no matter how revoltingly it can be described — is sacred and should not be separated from the Sacrament of Marriage.
Generally — here’s an overview of the way I’ve seen Christian sexuality. There are certain mandates to Christian sexuality — it should occur in a married (i.e. God-sanctioned) relationship, with an adult of the opposite gender, and be a general expression of the love between such a couple. Additonal players (extra-marital), animals, those of the same gender, and activities not meant as an expression of marital love are not sanctioned.
However, to the extent one may object to activities which meet the above requirements — those activities which you find objectionable (as I do the particular act you described) — all are free to decline to participate in.
But, to pretend that your preferences regarding specifics (i.e. those activities which you and I may find revolting) are a mandated so is simply not true. In Christian sexuality, married heterosexual couples are allowed leeway in the determination of the sexual specifics in which they will engage.
It is possible to engage in the particular activity you described in a Godly way, as can be oral sex, light bondage, or whatever else.
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If that's so, you might consider that God twined together two purposes with sex: the delight and attachment of the spouses, and the the continuation of the human race. Both are sacred purposes, and the first thing anybody notices about sex is that the two purposes are srongly linked. Physically conjoined. This is not accidental. This is designed, and providential.
Marital intercourse was given a form by God that does not deliberately separate sexual union from natural fertility. Love-play, fine, oh my. Contact, costumes, positions, and pleasures, fine, oh my. But sexual intercourse that is deliberately made non-fertile --- we're not talking about people who are naturally infertile, or naturally infertile times --- but intentionally made nonfertile, frustrates either the procreative or unitive meaning of intercourse, and usually both.