Forum:Zombie unanswerd question

There has been some thing that has bothered me about the node puzzle.A lot of pepole say that sam triked yuri in to letting out the zombies. But maybe she could have ben trying to release her self form the place in the device.Just lke gresh and maybe thats why she was so angry when he was released.That could also explain the floating orb that came out at the end of node 4.And has any bodie tryed flowwwing the orb ?? add your comments on what you think