Ugly Bearded Creature?

A Brunei nature documentary on Temburong has a "touch of mystery" to it. No real details, but the news article notes:

"The mystery started when one of our production crews fainted after she saw an ugly bearded creature in the jungle before we even started to climb.
"We have to leave her behind to be looked after by one of the guides."

Lots of known primates in Brunei, so would need better details to determine if this is an actual "mystery" or not.