I decided to closely inspect both dents in the battery compartment prior to making my decision. Using bright lights and reading glasses, I examined the first dent (closest to the front of the car) and found that that first impact fortuitously hit where the fore and aft frame member intersected the lateral support, below the bottom skin of the battery compartment. The fore and aft frame member was dented and torn slightly but the lateral support was only dented about 1/2 inch upward. In other words, the battery compartment was not penetrated.Abe, please let us know what You decided and how the car is faring after years if You decide to keep it? Without photos my disposition would be to keep the car and save / invest the spare $ knowing in the future it might need a new pack either due to damage or just simply age. I would think in the future it would cost under $10k for a 66 KWH pack but this is just speculation on my part (assume decreasing pack and labor costs). I agree with all others that $33k for a replacement seems an exorbitant repair estimate! Good luck.
PS little did I know I am now at post 800 - too much time on the net!!
The second impact point was also dented about 1/2 inch, directly in the battery compartment material. I inspected that area very closely and could not find any tears or punctures in the metal - just a dent. That was a relief! The car has not lost any coolant and it runs just as well as it ever did.
I have since driven the car on a 200-mile trip in hot weather (hot by Colorado Standards ~ 85 degrees) from Colorado Springs to Walsenburg, Colorado and performed a rapid charge at the Electrify America charge station in Pueblo. No issues. Next, I drove it from Co Springs to Denver on a full charge, at between 75 and 80 mph. Note, normally I drive at approximately 2 miles below the speed limit to maximize range, but this time I wanted to draw power out of the battery at a high rate to see how it would perform. Again, no issues.
Based on the above-mentioned inspections and tests, I decided to retain the car and the check. I have an appointment at the Department of Motor Vehicles on Tuesday to apply for the Salvage Title - I'm keeping the car.
My only regret is that as far as I've been able to determine, there doesn't seem to be a way to test the atmosphere inside the battery compartment to determine if it has suffered any oxygen intrusion. Based on John Kelly's videos (filmed at Weber State in Utah), it looks like the whole battery has to be removed and temporarily sealed in order to check the battery compartment atmosphere.