Thursday rally drew more than 150 people By Brent Lindquist [email protected] At about 1:15 p.m. Wednesday, Shawn Creasey and about 700 of his fellow workers at Alcoa Intalco Works found out they would be laid off. Alcoa is shuttering its Intalco smelter by July. Creasey is in his second stint at Intalco, having taken a…