The actual doctors' diagnosis override whatever we're discussing here, but the signs aren't good as you say. The fact that Vlad asked for the golf cart immediately suggests to me that either him or Ponce heard a pop.
If he has a full rupture there's a good chance they already know from the physical exam and MRI. Getting multiple opinions may be to discuss the best approach to repair surgically.
From the team perspective it's best to assume he's smoked for the year, with a best case scenario of bringing him out of the pen for a playoff run.