Airlines can manipulate a problem Fed back to a desk job.
Feds have to train and pass check rides on the Company's equipment. As it works out the problem Feds are usually the ones who have a problem showing proficiency in other areas. I'm not saying they were pushed, but the simple fact of the matter is that if they can't pass a proficiency check then their employment options are limited just like ours are.
Now that having been said, it is a VERY rare occurrence.
The general trend I've seen in law enforcement at every level is a tendency to really throw the book at the little guys, seeking the highest level of enforcement & punishment, while Corporations and the big guys get a wink and a smile. Just look at Bernie Madoff (which has resulted in over 50 billion in losses and several suicides) and all his buddies on Wall Street. Meanwhile first offense walking on an airplane with alcohol over the limit netted pilots ten years in prison.
I'm not defending that pilot. He should have called in sick before the trip instead of trying to tough out the death of his father and drinking his problems away the night before. Still - TEN YEARS - after the emergency revocation of all of his Certificates?