Sounds like an April Fools joke to me. Seems a year or two ago the joke was they were doing away with their choir.

Perfect opportunity for the restoration clips

It's a spoof.

http://www.cambridge-news.co.uk/Stolen-organs-lost-violins-French-invasion/story-29033441-detail/story.html

Cambridge does this every year. The jokes are funny, but not quite believable. Kind of like the Vatican saying, "we are going to restore traditional liturgy and music this year."

An entire organ that size would be hard to conceal. However, truth stranger than fiction on a smaller scale can happen. A local college had a rebuild of their pipe organ. Several antiphonal ranks disappeared and if anyone knows who took them, they are not talking.

If you worked the politics correctly, it would not be impossible to heist an organ, especially in a very large organization, and especially one that has shut it down expecting a rebuild

The April The American Organist has an article about joke stops and an alleged portrait of Giovanni Confeddi. Someone must have expected it to arrive a bit earlier than today's mail.