Lord Elis-Thomas may challenge his sacking as a committee chairman
Dafydd Elis-Thomas has won support from members of the assembly committee from which he was sacked as chairman by his party.
Plaid Cymru's decision was "damaging" to the environment committee, said Labour member Mick Antoniw.
Plaid also fired former leader Lord Elis-Thomas as the party's transport spokesperson on Thursday.
It followed his criticism of leader Leanne Wood's attack on UKIP at the party's spring conference.
The former assembly presiding officer told BBC Wales it was "facile" of Ms Wood to say a vote for UKIP in May's European election was a vote against Wales.
Lord Elis-Thomas told Vaughan Roderick he may challenge attempts to sack him from his assembly committee role.