Here's another way that evangelicals have disembodied the gospel.
Jesus left us various rituals, like baptism and the Lord's supper, that have a relationship to the gospel.
Most evangelicals, though not all, believe that these rituals are ordinances - that these are memorials, human celebrations that God has commanded us to observe to remember the gospel. God affects our salvation spiritually only; the physical acts are just ways of remembering it, and are not themselves a part of the process.
The Catholic Church holds the historically Christian view and teaches that these rituals, along with 5 others*, are actually sacraments. A sacrament is a sign and instrument of God's grace. When a person receives the physical action of a sacrament with the proper interior disposition, the sacrament actually does something. God effects salvation for us in a manner that is both spiritual and physical.
Let us use baptism as an example.
For most evangelicals, baptism is merely an outward sign of something that has already happened, in this case, the forgiveness of sins. Baptism doesn't wash your sins away, they're already gone with the mental act of belief. In the physical act of baptism, nothing happens. The main event of having your sins washed away occurs in the believer's mind when they believe. The physical action is separate from the spiritual, and, for most evangelicals, is not necessary for salvation (though they believe it should be observed out of obedience).
The Catholic Church teaches that when a person with interior faith is baptized, the act of baptizing them actually communicates the grace of forgiveness. Not only is there the outward symbol of the person's sins being washed away with the water; the person's sins are actually washed away. The physical and the spiritual match up.
So why does this matter? Because humans are spiritual and physical beings. The sacramental understanding takes this fully into account. At best, the ordinance understanding believes that the spiritual is what's important, and that the physical, while being non-essential, is a nice thing to acknowledge after the fact.
The 13th century Catholic theologian St. Thomas Aquinas puts it this way in his Summa Theologica:
"[I]t belongs to Divine providence to provide for each one according as its condition requires. Divine wisdom, therefore, fittingly provides man with means of salvation, in the shape of corporeal and sensible signs that are called sacraments." (ST III.61.1)
Sacraments treat us humans as what we are, spiritual and physical beings. Ordinances do not adequately account for the physical dimension of humans, and thus further disembody the gospel.
*Note: The seven sacraments left to us by our Lord Jesus Christ according to the Catholic Church are Baptism, Confirmation, the Eucharist (the Lord's Supper), Reconciliation (Confession/Penance), Anointing of the Sick, Marriage, and Holy Orders (Priesthood). The first three are the sacraments of initation into the Church, the next two are sacraments of healing, and the last two are sacraments of vocation.