Doesn't the independent scientific community agree on the neonicotinoids playing a significant role here [0]? Denying that this is (edit: no not) true on part of the pesticide manufacturers is a pretty big gamble, IMO.
Let's see if the European Commission enforces the ban on this neonicotinoids and what the results of such a ban will be.
I don't see any claims of a "significant role" in that article. They show that these pesticides applied directly to the brain are damaging to the brain. But I didn't find any convincing claims that (a) these pesticides actually get transported to bees' brains in large quantities (they only talk about the amounts inside the entire body) and that (b) this is actually the primary reason and not just one of many contributing factors.
Let's see if the European Commission enforces the ban on this neonicotinoids and what the results of such a ban will be.
[0] http://www.bbc.co.uk/news/science-environment-21958547