The drugs Kaplan gave him wore off and he realized that he'll never go anywhere or do anything good with his life working for MSNBC....OR....the Bowtied One.
"The New York Post paints a dubious picture of Severin-the-tired-commuter, not seeing the ratings-challenged program as worth his commute from Long Island to New Jersey"
Apparently he got tired of the commute to the show... shocking.
Personally, if my commute was 'falling out of bed', that would be too much as well.