Kari Lehtonen leaves with head injury
Lehtonen lost his helmet as he fell back into the goal after the hard hit.
"Obviously, not good," Stars coach Lindy Ruff said after Dallas' 4-3 win. "[Haula] went in hard, [Lehtonen] hit the crossbar hard. Likelihood, it's a concussion on just a dirty play. He should be suspended.
"Fourth-liner takes out our goaltender."
In Lehtonen's place, Tim Thomas made his Stars debut and stopped all six shots he faced. They acquired him from the Florida Panthers in a trade at Wednesday's deadline. Minnesota was leading 3-2 at the time.
Haula received 15 minutes in penalties, a major for charging plus a game misconduct.
Information from The Associated Press was used in this report.