Just out of curiosity, where did you find the windshear scenario? I'm not trying to be adversarial, but I'd like to know your sources.
According to the NTSB during the investigation all they could babble about was improper systems training (which was true):http://www.ntsb.gov/ntsb/GenPDF.asp?id=NYC07LA081&rpt=fi
It was in the report where the pilots stated they had encountered windshear during the approach...the pilots never mentioned the significant amount of ice they had accumulated as a possible cause, in fact, they mentioned it was a trace amount, despite what line personnel attested too.
Well, that's actually why I asked. I was based at BVY when that happened and had a flight the day after the incident. There was LOTs of scuttlebut going around the airport as to what had happened.
Which report are you referring to that states the windshear?
Edit- just saw you added links to your post. Thanks!