Funny thing happened on the way to the Blues getting Jaroslav Halak back. Actually, it wasn’t funny at all. Reeling in a slump, the Blues activated Halak on Sunday and prepped the netminder to make the start against the Los Angeles Kings on Monday. But during pregame warmups, Halak did something to aggravate the groin muscle injury that disabled him in the first place. When the Blues took the ice, Halak was on the bench and Brian Elliott was back in goal. The Kings outshot the Blues 23-22 and skated to a 4-1 victory. Coach Ken Hitchcock indicated the injury to Halak was a bit unsettling. “It just happened so quick, it was right after the warmup,” Hitchcock said. “So I don’t think it was just like, ‘We’re going to play.’ I think everybody was in a little bit of shock, but it is what it is. He had two really good days of practice and then, I don’t know, somewhere in the warmup, he pulled it again.” Halak has not played since coming out of the game at Detroit on Feb. 1 with the problem Since then, Elliott has been pierced for 20 goals. He was victimized for four goals or more for the fifth time this season. That happened only twice all of last season. But goaltending does not explain all of what ails the Blues. “It’s just not a good time for the team right now and we’re just going have to learn to battle through it,” Hitchcock added. Hitchcock said he would know more about Halak’s situation today.