I don't see why FR would want to operate from MAD, however good the deal - isn't that airfield far too large for their type of operation?
Easyjet seem far more happy with the major hubs, whereas I'd suspect FR are looking at a few bargaining chips for other Aena properites (hey, and we complain here about BAA/Ferrovial's market share), or just playing MAD off against the new Don Quixote, which might just get to call itself Madrid South, considering that 200kms by AVE will take much less time than 100kms by a crawling bus.
And according to U2's website, LGW to NOC is staying over the winter, or am I misreading this?