The New ACDM Model

The surprising aspect of this observation is that spectroscopically measured metal content of the parent galaxy corresponds to that of modern stars. By way of explanation the team invoke a simulation (Springel, et al. 2005) which is interpreted to show that  

However, in their massive Millenium Simulation the closest that Springel s team comes to such a conclusion is 

The simulation assumes galaxies to originate from cold dark matter, augmented with a dark-energy field (in the form of a cosmological constant, A -the value of which is not disclosed), together with cosmic inflation, driven by weak density fluctuations in the early rapidly expanding universe. To quote  

To my mind this rationalization of the observation, and many others like it, is an admission that the big-bang nucleogenesis model is refuted by the observation of GRB 090423, and is now replaced by the assumption that heavy elements occurred during the inflation epoch by mechanisms that differ from those operating in ordinary stars. 

To summarize In order to support the big bang, the observation of heavy metals in the very early universe needs to be explained. These elements can only be produced in stars. Suitably parametrized simulations identify a certain class of VMS s, if they exist, as a possible source of metal enrichment to match observation. Therefore VMS s existed in the early universe The only remaining problem is that the temperature of the hot big bang is too high for clumping to occur within the primordial dark matter without a suitable coolant. Voila Primordial molecular hydrogen could do the job, provided it is destroyed again before it disrupts post-inflation events. 

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