The NCAA rule book says that a puck that is deflected off an attacking player
and goes in to the net is a goal.  However, a few paragraphs later, it says
that a player cannot intentionally deflect a puck into the net.  By contrast,
the NHL rule book is explicitly that a puck deflected into the net by a skate
is a goal, unless the attacking player deflects the puck with a "kicking
motion."

So, the NCAA rules don't require a distinct kicking motion, just "intent" to
deflect by the attacking player.  Did Lucas intentionally deflect the puck
into the net?  Perhaps, but it's not as clearcut as the Fox NE announcers
would have us believe.