Board Thread:Warhammer 40k General Discussion/@comment-6767898-20130227013545/@comment-7186329-20130409171425

Nope. IF The Emperor could directly perform miracles in realspace, and it is not certain if He can, then Guiliman would have been healed already, unless the stasis field was in the way. And The Emperor would have been able to communicate directly with the High Lords of Terra, and still rule and direct the Imperium.