I hope not. DeAngelo is a Jersey kid but is a small (5'11, 167) offensive defenseman who struggles defensively and has been suspended twice this season for violating the OHL's harassment, abuse, and diversity policy. He was one of the last cuts from team USA for the WJC this year.
Even without the off the ice issues, the Devils have a ton of depth and quality at D and they don't need a kid that can't play in his own end.
He's ranked anywhere between 10 and 30 on rankings I've seen. Lou seems to always run a best player available draft. And it seems like suspensions don't really bother him so much if he likes the player, see, e.g. Corrente and Merrill. The article doesn't really say what precisely happened with DeAngelo, and that Sarnia is being tight lipped about it, but violating something vague sounding like the "harassment, abuse, and diversity policy" can mean anything from burning a cross on someone's lawn, to saying that n'sync was a pretty gay boy band.