So, my first thought on hearing James Comey was fired was, "Deserved and long overdue." He was a lousy FBI director with rotten judgment. He is nauseous, and he makes me feel nauseated.[*](It's a linguistic pet peeve of mine when people confuse the words "nauseous" and "nauseated", although even doctors get it wrong. "Nauseous" describes something so horrible and disgusting that observing it makes one feel sick to one's stomach. "Nauseated" refers to the condition of being sick to one's stomach, i.e. having nausea. To illustrate with a sample sentence, it would be correct to say, "The nauseous sight of his hand after it was mangled in the industrial accident made me feel nauseated.")
But my second thought was, "Why?" Then they tried to feed us the line that it was because of the Hillary e-mail investiscandal thingie, and I immediately became skeptical.
In the first place, why would Trump fire the person whose fatal step ultimately led to his "victory"? And in the second place, even if Trump did want to punish him for such a thing (which would be completely out of character) why would he wait nearly four months after taking office to do it? That literally makes no sense whatsoever.
Whereas Trump firing Comey for not playing the company way on Russia--i.e., for investigating the Russian connection to the election, campaign, etc.--would be completely in character and would make perfect sense according to Trumpian logic.
The only thing I'm not sure about is if this would represent the greatest treason. I suspect this may just be the tip of the treason iceberg.