lishan wang was charged with murder in the shooting of dr. vajinder toor outside his home in april 2010 .
in 2010 wang was originally ruled incompetent , but he was restored to competency after being treated at connecticut valley hospital .
a second evaluation was ordered earlier this year after the public defender 's office asked the court to terminate wang 's self-representation .
mental health experts said wang displayed ` paranoid thinking '
they said he was ` guarded and suspicious ' when discussing a relationship with court-appointed lawyers .
wang , who represented himself at the hearing , is due back in court in may .