I'll let Riggo chime in but he is pretty quick.

Since UUC billed 6 hours just for the SSK install, my humble opinion is that they did the install "by the book", dropped the driveshaft, transfer case, etc, and probably lowered the trans itself, to give a wide open tunnel and view of the linkage.

I'm sure if I had wide open access from the side of the pin if everything was dropped I could have gotten it out, but I don't have a lift.

It's VERY doable with the carrier in the car, you just have to unbolt the front mount which is secured with 2 bolts directly in front of the shift knob.

Point is, I would try to remove the carrier by letting the pins loose on top of the trans, if they are stuck, then go to Plan B which is take off front mount and secure height adapter from inside the car.

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards