I liked it, but didn't love it. It made it more confusing and frustrating. So now we're going to see Desmond running all the losites into the water so they can see what they're true lives should have been? With only 5 eps left, I don't feel like it's enough time to convince everyone that they need to do something related to something they know nothing about- ugh!
And if the bomb was the cause of this flash-sideways than why didn't the world 'cease to exist'. If the island is not protecting the world from evil, how is the world going on it's merry way?