100% sane. Kyle was unable to finish school, nor was he able to stay employed when his delusions became out of control. He had become increasingly paranoid that his mind was being controlled by martians.
Attempt to explain himself. In his manifesto, Odom attempted to explain why he tried to kill Pastor Remington. He emphasizes, throughout the manifesto, that he is 100% sane and 0% crazy. He describes becoming aware that two of his co-workers were not humans, and that frightened him.
Sex slaves. Odom described a master race of martians that used mind control to subvert humans. He knew that the martians were reading his thoughts, and that he was in trouble. Remember, 100% sane, 0% crazy.