About 30 of Mr Abdullah's supporters, including a second imam, have also been barred from the mosque.
Mr Abdullah follows the Salafi strand of Islam, while most on the association's board and many of the mosque's 400 members follow the more moderate Hanafi or Shafi'i strand of the faith.
A letter from the Muslim association's lawyers to the lawyers acting for Mr Abdullah's supporters said they had tried to take over the mosque.
Association president Haider Lone said that the board did not want Mr Abdullah as leader.
Mr Lone said security had been stepped up at the mosque with entrances being secured with metal gates after doors had been hacked and locks broken since Mr Abdullah's ban.
Yesterday, a letter from the lawyers for Mr Abdullah's supporters to the association's lawyers accused the centre of having "taken further steps to inflame the situation".
The alleged steps include placing security gates on all doors at the mosque, which was "potentially very dangerous", hiring security guards who have refused access to some members, and continuing to issue trespass notices.
The letter requested a meeting with the association to "finally resolve the dispute in an amicable fashion".
Originally from Egypt, Mr Abdullah had been an imam and a trustee at the Avondale mosque for nearly two years.
The father of seven says that he was a priest in Qatar for four years before he came to New Zealand 14 years ago.
Yesterday, five followers and two of Mr Abdullah's sons sat in when he spoke to the Herald at his Mt Roskill home.
Mr Abdullah said allegations made against him "are all lies" and denied he was extremist in his views.
"What I teach are the teachings from the Koran, and if these people want to consider the truths from Allah as extreme, then in that case I am extreme," he said earlier this week.
The imam's supporters have begun a petition to have him reinstated at the mosque.
In the interview earlier this week, Mr Abdullah said that he had clashed with the mosque management about its plans to start charging for madrassa, or religious classes.
He said he believed "wanting to make profit from religion" was why they wanted him out.
Association member, Iliyas Daud, who is fighting to get the deposed imam reinstated, said the ban was a result of a "clash of ideologies".