Lambos was reassigned to AHL Iowa on Friday.
Lambos was called up Wednesday, and he made his NHL debut during Thursday's 5-2 win over Columbus. He recorded a blocked shot and a plus-1 rating in 10:16 of ice time, but he'll head back to the minors a day later, signaling that at least one of Minnesota's injured defensemen could be cleared to suit up Saturday against the Oilers.