If Lively is hurt, this is the way for Minnesota to get back into the series. Just go crazy down low against Gafford and Washington, tire them out and get them into foul trouble. Dallas doesn't have good backup options at all if they don't have Lively.
They should get the calls in Game 4, especially considering the NBA wants to extend the series and not have a huge break. Then Game 5 at home. If the Timberwolves win a couple and get their confidence up, and are going into Game 6 with Lively still out and the Mavs struggling to defend inside, it could get spooky.