WARNING: IF YOU HAVE NOT SEEN UNDERWORLD: BLOOD WARS, CONTINUE AT YOUR OWN RISK! THERE WILL BE A MAJOR SPOILER!!!!!!
YOU HAVE BEEN WARNED!!!
Hey, so.... Michael isn't dead. It is literally an impossibility. I think you might be forgetting a FEW major things.
1) Michael. Is. A. Vampire. We even saw David get shoot. Multiple. Times. And he survived. And we all know, that Michael is very much stronger than ANY vampire. He's helped Selene, who couldn't do it without him, in killing, not ONE but TWO elders. That proves that he's pretty strong.
2) It never really showed him dying. All it really showed was blood dripping from him. Never, his dead decaying body. I'm pretty sure Marius would've been there to see it. But, HIS MEMORIES never showed that.
3) This one goes hand in hand with #1. If vampires are near death, they go into a hibernate like thing. Michael, again, is more vampire than werewolf. He has a DIRECT line with the Corvinus bloodline. I believe that, since Eve and Selene are together, that Eve will see SOMETHING about Michael's whereabouts. Then Selene will give him blood and then they'll be a happy family!!! Together!!! FOREVER!!!!
That's it really. I'm done. This idea/theory belongs to me! I just finished watching the movie IN THEATERS so how could I copy this from someone?