The implications of the earlier article remain. Would you like to explain the decay mechanism to me?
Quick answer: I don't have time tonight. You can google up some good information though.
The alpha decay discussed in the article is significantly different than the beta and gamma decays. Radiocarbon dating, for example, uses beta decay.
In any case, it looks like the accelerated alpha decay requires conditions never present on earth prior to modern technology, so I see no implications for radiometric dating.