Mr Vaea was also accused of not being around to present the jerseys before the team's final pool game against South Africa.
Samoa had hoped to repeat their performances of the 1990s when they made the play-offs three times, but managed only third place behind South Africa and Wales in their pool this time.
Mr Vaea was dropped as manager on the team's return, and the Samoa Rugby Union has advertised for a new manager "to lead, drive and manage" the national team.
The union is also looking for a new head coach and two assistant coaches.
"The new management team will be responsible for identification, recruitment and nurturing potential Manu Samoa players worldwide," it said.
Mr Vaea could not be reached for comment, and union officials did not return the Herald's calls yesterday.