Ouch
Sorry to hear of the incident - but if you can walk away relatively unscathed then that is the best news you can get !!
Had a look at the cage pic - it certainly did its job!! Your impact was at THE worst point but still retained a lot of integrity. The only thing we do differently in our cages is to run a diagonal bar across the roof to triangulate the cabin roof area. This helps prevent the occupant area becoming a parallelogram in a hit. Your cage was well worth the money !!!!
And to all the wet weather drift specialists ..... telegraph poles are a close relative to forest trees
Cheers