From RCN's facebook page today:
RCN: Hello Steve! Thank you for expressing your thoughts regarding WNBC. The change was a business decision and proprietary in nature so additional information is unavailable. Thank you, Gina
3 hours ago · Like
»www.facebook.com/RCN/pos ··· mments=7
So I guess all those excuses about the FCC and the DMAs weren't exactly truthful reasons behind the move after all.