In hindsight, it may have been the wrong time to attack... but then again, who was going to bridge the gap if he didn't? As Cadel says, "Funny, usually people tell me I don't attack...".
Post-race it's always easy to pull things apart and make declarations about what would have happened if.... but until we can set up some parallel universe and trial all of the options, we'll never really know. At 5th, Evans was ahead of some big names. (Worth noting too that Simon Gerrans had another good race, finishing 8th.)
And come July we'll get to see Cadel defend his now traditional 2nd place in Le Tour. He may even attack!