So you can wrap things up, Cyclone:

Both Fangir and the Champion, exhausted by their battle with each other, are incinerated by Soran's fireball, presumably.

The people in inside the temple have suffered some serious casualties from:
A. Emily's explosion, the collapses, suffocation, and panic also caused from that.
B. Those trying to escape before the zealots got there, and getting killed by Pain elementals/a very few making it .

You won't get the full five thousand, but there'll still be a few thousand. Maybe in the 3000-3500 range.