Check the manufacturing materials online and see if they use asbestos in their insulation in the door. Some fridges have it, then you take out the door board and your left with asbestos. It looks too new for that, though, i ran into that problem with a fridge from the 70's and this is NOT one from the 70's.
Also, alot of the 'insulation' is an air gap between the door shell, the insualtion sheets, and the metal outer door. Taking one away may not make it as stable. kind of like how a wet suit works. Keep that in mind.
It looks like it should be no problemo, but do what you think. If you wanna take a risk and see what happens, go for it. Can always fix mistakes with expandable foam.