Look, oil prices have crashed. It costs more to drill it than you can get selling it. Layoffs are necessary in this environment. He could have been a bleeding heart and not laid off anybody, and then the company goes bankrupt, and everybody loses their jobs (instead of only 20% of the employees). He made the correct business move, and is being rightfully compensated for it.
Remember, he can't "give himself" anything. The Board of Directors approves it, along with whether or not he gets to keep his own job as well.
People screaming about CEO pay are mindless idiots. CEO pay is established by the supply and demand for people qualified for the job.