On a long drive across the desert last week I was listening to PGA Tour Radio on Sirius (normally a pretty lousy station, but it was a very long drive and I was bored) and they had an interesting interview with a chap from the R&A about the St. Andrews changes. He was pointing out that when the greens were designed the speeds were far, far lower and hence they could use much more of the green for pin positions. However, as turf science has improved greatly in the last couple decades and maintenance techniques have also improved, they are able to maintain greens at faster speeds now and the golfing public has been very demanding about having this speed.
He also indicated that over the decades, the contours of the greens have slightly changed do the the foot traffic, land settling, sand buildup, etc., and that the greens you see today aren't actually the same shape and contour as they were a hundred years ago.
Unfortunately, this means that there are large parts of the greens that simply cannot be used for hole locations. This greatly shrinks the usable green size, meaning that the normal traffic wear on a green is concentrated in a much smaller area, putting enormous stress on the grass and making it very difficult to keep conditions acceptable for the many tourists and regular players. Faced with a choice of limiting the number of rounds or reshaping the greens slightly to significantly increase usability, they're going with the latter option.
It's fine for people like Padraig to criticize making changes, but he's not the one who has to maintain the bloody thing and listen to the tourists complain if it is less-than-expected condition. And who is Martin Hawtree? Only someone who was carefully selected by the R&A based on his exceptional work at many courses such as Lahinch, Royal Melbourne, Carnoustie, Muirfield, and a host of other historic golf courses, the namesake of a golf architecture firm celebrating its 100th anniversary this year, and someone elected Fellow of the British Institute of Golf Architects.
Sheep aren't being used to mow the grass there anymore. Let it be maintained and tweaked a little so it can still be enjoyable in another hundred years.