Update (4/19): I'm going to leave some of this up, but I'm starting to feel bad about Simon taking the blame for something that I'm not sure was his fault. I wasn't there, so I have no idea what happened, but the video for A Forest is a lot less dramatic than some made it seem. Sure, Simon didn't do a prolonged outro, but he simply stops playing, and calmly walks over and puts the guitar down (and as AndrewV127 points out, the same thing happened in Rome last year). And it looks like RS DID say thank you at the end (though the video cuts out before he says it). I think many of us might have over-reacted to the initial reports. Hopefully, the band are fine, and having a good laugh about all of this speculation. Here's to a great show at Coachella!
Original report: What happened at the end of the show? Why was it cut short? Was something wrong with Simon? Is he okay?
Andy: "Apparently he threw his bass down angrily and walked off after The Kiss. And during A Forest he didn't finish as he should have."
Jeff: "It was a pretty odd way to see them end the show. I've never heard Simon end A Forest like that... ever."
Update: Just heard from Sara, and she says she was told that there's no curfew at The Pearl on Friday nights, and it was completely up to the band to end the set.
I also wanted to point out that the band didn't start 45 minutes late, it was only 15 minutes. While the tickets and Pearl website listed an 8pm start, the official band schedule had them starting at 8:30.