I was looking at my Joby phone adapter the other day and noticed a crack in the base near the mounting insert. This thing has only seen light use, so this is a manufacturing defect and probably the same issue Matthew experienced.
The Joby, getting ready to fail:

I decided to try to take advantage of my iPhone’s MagSafe and create a phone adapter for my Gorillapod. I use JB Weld to attach a T-nut to the cut off base of a MagSafe mount to add 1/4 x 20 thread capabilities. The Joby weighs 24 g with the quick release adapter, and the thing I built weighs 42 g. The one thing I would change is to make it a bit shorter, as I made it taller than is necessary.
My DIY MagSafe mount next to the Joby:

A little JB Weld to attach the T nut:

The MagSafe magnetic adapter is pretty sweet in that you can just touch the phone to it and it immediately pops on securely, and you can achieve any rotation angle you want.

I really think the Gorillapod is the best solution for my backcountry use, because I am always setting my equipment up on strange, irregular surfaces, hanging it from branches, etc. If all I ever did was set it up on perfectly level surfaces, some of those more minimalist solutions might work though.