You can go to liveatc (I don't recall if its .net or .com) and listen to the atc and see if you can hear what they mentioned. It may take some work to figure out the time code and frequency they are using if you are not familiar with the website. Someone I knew had a similar experience on another airline recently (and an airline I do not fly for exactly this reason). The FA made an announcement that they aborted the landing due to high winds. Perfectly calm day. I listed to the ATC and it turns out that the pilots had a lot of problems finding the airport. By the time they found the airport, it was too late to line up and they were too high. They weren't even close, and any decent pilot would have made a loop before descending. Control tower even asked/suggested they should go around, but nope, these idiots still attempted the landing and got to 300' before they decided to abort. With SAN it is a very steep approach and a lot of traffic so my guess is either that traffic had not cleared the runway or they had not descended at a fast enough rate.