I am not sure why people seem to think that this is so momentous a decision - with just in time production, it makes no sense to produce something that ultimately requires storage and warehousing costs, tying up working capital. We know that the A380 is still delayed, and RR have surely reached a point where they are confident that staff and resources are better used elsewhere for a year or so.
There must be thousands of Tier 1, 2 and below suppliers who have made the same decisions!