They hold, accordingly, that our Lord, while preserving the type of the first-begotten and primary tetrad, was compounded of these four substances, — of that which is spiritual, in so far as He was from Achamoth; of that which is animal, as being from the Demiurge by a special dispensation, inasmuch as He was formed [corporeally] with unspeakable skill; and of the Saviour, as respects that dove which descended upon Him. He also continued free from all suffering, since indeed it was not possible that He should suffer who was at once incomprehensible and invisible. And for this reason the Spirit of Christ, who had been placed within Him, was taken away when He was brought before Pilate.
https://www.newadvent.org/fathers/0103107.htm
Nota bene: this is not a spiritual Christ abandoning Jesus on the cross, but this is a spiritual Christ abandoning Jesus when Jesus "was brought before Pilate".
I know only a parody of this same Christ escaping both Jesus and Pilate in the same moment. This parody is named: "Jesus Bar-Abbas" ("Jesus Son of Father").
Hence, this is further evidence that Couchoud/Stahl are correct to define the Barabbas episode as a Judaizing parody addressed against the Gnostic separationism.