captain's pick
captain's call
snap judgment
unled
executive decision
decisionless
follow someone off a cliff
headless
acephalously
free-range
leaderless
solo run
voiceless
authorityless
bicephalism
chiefless
take liberties
take the liberty
chanceless
acephalic
one's own boss
unguidedly
leaderlessly
shadow
King Log
backroom
indiscreetly
de son tort
unauthorized
the organ grinder, not the monkey
unauthorised
figurehead
unleaderly
slip off
middle management
duce
unguided
beyond one's pay grade
unipersonalism
willy-nilly
public authority
rubber stamp
unmeekly
unsupervisedly
choiceless
helm
conflictless
vice chairperson
rule
noncoercively