I used this DIY thread. The wires he removed are different than what was in my X5, I had an extra wire/connector that I had to remove. You can see the 3 connects in my previous post.
The Kenco Club | Removing the phone cradle on a BMW X5 (E70)
Basically, there's a torx screw on the panel towards the engine bay. Remove that, slide the panel forward, then slide the other panel that's under the armrest forward. Then you'll see the wire that connects to the cradle. Hardest part was removing the big black connector from the harness.