Some times when they fall, they are not able to get rid of the skin at the top. You do have to be careful, but you can gently pull that off. If it does not come off easily, spray with water to soften it.
Monarchs can emerge from a laying down position. The major issue is having something to crawl up on to inflate their wings.
Monarch Watch uses an emerging cup:viewtopic.php?f=6&t=648#p3241http://www.youtube.com/watch?v=OtDbSBnUy7Y&feature=plcp
I took some video about a year ago. Put the net side of the cage towards the light--always put the plastic side away from the light. Line the bottom with paper towel. Each morning I arranged the dark chrysalis so they didn't have to climb over the other pupae.