1) The UK release is not being delayed. The Clove update was pretty clear that it was the SIM free stock that was delayed, not the launch date itself. I'm sure that Samsung is giving the carrier locked SIM versions to carriers as of the 17th.
2) I believe the guy last night who said Monday the 28th had solid sources based on his post history (I did investigate it). That being said, his solid sources may be mistaken as secrecy seems to abound in Verizon's world.
3) Verizon/Google/Samsung have a lot to learn about launching phones. I am moving over from an iPhone 4 and AT&T. It was very nice being an Apple fanboy. They tell you they're having a press conference, then they have one in which they announce the phone and a launch date, and then you buy your device on that date. It was infinitely better. This whole ordeal is making me want to cancel my plans to switch to Verizon entirely and just buy the international SIM free version.