Sociopaths are usually very motivated and calculative. He's simply a narcissist whose ego is crashing in real life. Unfortunately for him, the ego breeding has been going for far too long and he simply can't comprehend "little special him" has to face consequences too.
Everyone has to learn a lesson in humility at one point or another. The bigger your ego was bred, the harder it crashes. (experience talking)
Or as simply put by Mike Tyson:
If you are not humble in this world, this world will thrust humbleness upon you.
There are two types of narcissism. Classic narcissists and compensatory narcissists. OP is a compensatory narcissist.
Usually compensatory narcissists fail at life because they're all talk and little action (just like we see with OP), whereas classic narcissists are your more typical sociopaths who believe so much in their own rightness that they take too much action and are prone to law-breaking and physical violence.
Classic narcissists have high self-confidence and high self-esteem, but subconsciously feel inadequate. These types are harder to spot because they themselves have difficulty noticing their behavior. They prefer actions over words, so instead, of shouting to the world about how great they are or how much approval they deserve, they simply act as if they are the best.
Compensatory narcissists consciously feel inadequate and a lack of confidence, so they make up for it with more verbal narcissistic behavior. They're incredibly self-conscious and sensitively rely on approval from others to pamper their insecurities (OP masquerades his approval-seeking with "woe is me i broke my arm" and "my site is down and i have negative balance" comments so that others will forgive his irresponsibility, while our favorite wickedfire narcissist, galacon, masquerades his approval-seeking by putting others down on an internet forum all day because he gets no social approval in real life).
They do this because they consciously believe they have to prove themselves to to others to receive love and respect. Irony is that it does the exact opposite and brings disrespect and laughter at them.
The classic narcissist believes in his own rightness, whereas the compensatory narcissist is acutely aware of his or her own insecurities and is trying to make up for them on purpose.