By Lenn Thompson, Founder and Editor-in-Chief The downfall of the 2009 Long Island wine vintage has been greatly exaggerated. Especially with regard to quality-focused producers. Yes, 2009 has been a difficult year for grape growers on Long Island. Very difficult. So difficult in fact that David Page, co-owner of Shinn Estate Vineyards told me that “there has never been a more frustrating spring since we started growing grapes.” A Smaller Crop That cool, rainy spring — particularly an overcast June lowlighted by 20-plus days of rain — wreaked havoc on flowering vines and invited a condition known as coulure. Caused…