Sorry to hear about your friend. I will pray for him. I am a professional ski patroller at Crested Butte Mountain. A freind of mine who has an avalanche dog and is sometimes involved with these situations talked to some of the Alpine SAR members involved with the rescue effort. She said that she thought one or both people were experienced in backcountry travel and were excellent mountaineers. Avalanche forcasting is very difficult. A lot of patrollers at Crested Butte have been caught in slides in bound doing avalanche controll work and also in the backcountry. Keep yourself in good spirits. God will help you and your friend through this.
I don't have a bible with me, but I think it is Matt. 6:32 that says "Worry not for today, for tommorrow has enough worries of its own."
Take care of yourself.