From http://www.nytimes.com/2009/10/13/science/space/13lhc.html?_... :

A pair of otherwise distinguished physicists have suggested that the hypothesized Higgs boson, which physicists hope to produce with the collider, might be so abhorrent to nature that its creation would ripple backward through time and stop the [Large Hadron] collider before it could make one, like a time traveler who goes back in time to kill his grandfather.

With each delay, the theory becomes a hair less fanciful.