Blackhole radiation v Second Law

[ash99]

Can someone help me on this: Hawking Bernstein radiation can cause a BH to evaporate. The second law of BH dynamics says that the area of the event horizon cannot decrease. Isn't this a contradiction? Also when considering the size of the event horizon, is it different depending on wheather one is in free fall or static. Finally is it ok to use PI to calculate spherical area in heavily warped space?
If the answers involve Killing Vectors, I'll need help with those as well.

 

[mathman]

The Second Law

The horizon area is, assuming the weak energy condition, a non-decreasing function of time,

This "law" was superseded by Hawking's discovery that black holes radiate, which causes both the black hole's mass and the area of its horizon to decrease over time.

Above from:

http://en.wikipedia.org/wiki/Black_hole_thermodynamics