What does the last sentence mean?
OFHEO, with a staff of 200, existed solely for the purpose of watching these two companies. And what happened were two of the greatest accounting misstatements in history, billions and billions of dollars, while these 200 people had their jobs. They went two for two.

Question

Answer

I think it is an idiom, that comes from American baseball. = to be successful two out of two times. To get to first base two out of two strikes.

However I am not entirely sure what it might mean in a negative context like yours. "accounting misstatements ?" 
While OFHEO existed 200 people had their jobs and they were successful every time. In watching the two companies.
Until the accounting misstatements.

I think it could be worded a little better.