It's actually quite a bit more complicated than the article makes it out to be.
There is a factor, called "false-vacuum state," which to equate this, is similar to the sudden low pressure created by an explosion; the explosion expands, while the center will eventually implode.
Now, if the false-vacuum is correct, then, yes, the Universe will suddenly, and dramatically, implode on day; however if its not correct, the implosion will never occur. The magic number to all this is in the mass of 126 B Electron volts(supposed weight of the HBP); which can be distributed to estimate the energy potential of the universe.
What this means is:
In a False-vacuum universe, the energy is insufficient to continue to expansion and will one day be wholly eclipsed by the imploding pressure;
Or, in a non-false-vacuum universe, the energy is simply a constituent of the overall force, with no counter-force gradually overcoming it.
Honestly I am in the camp of the HBP being just another part of the particle zoo; important to a degree, sure, but not completely game changing. I subscribe to the evolution of the science and out understanding; not the defeatist/absolutist approach of many of the HBP crowd.