Ratzinger does reflect the committee. As I have noted, he does not believe that an actual immolation takes place. To him the sacrifice involves no destruction but celebrates man's transformation. For more on this cf: "Considerations on Cardinal Ratzinger's Fontgombault Conference" by Fr. Patrick De la Roche, The Angelus, April 2002.
You and Roche aren't getting what he was talking about. Ratzinger was explaining what a sacrifice is.
A sacrifice properly so called is something done for that honor which is properly due to God, in order to appease Him: and hence it is that Augustine says (De Civ. Dei x): "A true sacrifice is every good work done in order that we may cling to God in holy fellowship, yet referred to that consummation of happiness wherein we can be truly blessed." But, as is added in the same place, "Christ offered Himself up for us in the Passion": and this voluntary enduring of the Passion was most acceptable to God, as coming from charity. (ST III q. 48 a. 3)
Ratzinger's whole point was that the value of sacrifice is from charity, and not from the destruction itself. "A true sacrifice is every good work done in order that we may cling to God in holy fellowship". Of course Ratzinger believes that an immolation (offering Christ to God) takes place:
Again it is clear that the Eucharist of the Church – to use Augustine’s term – is the sacramentum of the true sacrificium – the sacred sign in which that which is signified is produced.