Schizophrenia or any psychosis is way off base. He has classic Narcissistic Personality Disorder, as has been stated many times. There is no psychotic thinking disorder, although to a reasonable layman any liberal would tend in that direction. His evident paranoia is 1) A result of threats to the narcissistic self esteem, and 2) Justified.
In the case of President Obama, the senior firings are not happening during a single night but the recent involuntary sudden departures of the White House chief of staff and national security adviser, along with what WMR can confirm from multiple sources is a president who is suffering from Nixonian levels of paranoia, depression, and schizophrenia, has some top-level administration officials considering the first-ever invocation of Section 4 of the 25th Amendment — the involuntary removal of the president from office. The White House meltdown has the Washington political circuit buzzing under the surface.