This is exactly what happened to our flight from Casablanca to London, as it was making its only stop in Gibraltar. There was a horrible windshear (I guess Gibraltar's small airport doesn't have a windshear warning system), and the stupid pilot attempted to land, but couldn't and pulled up and landed at Malaga. Thank God BA saw his incompetence and after we landed in Malaga, ordered him to evacuate the plane, and was unexpectedly replaced by a different pilot. I remember even the flight attendant saying to another passenger, "on a scale from one to ten, that was a nine."
Speaking of which, did anyone see "White Squall"? Is that windshear? Has anyone ever experienced this?