An ASTI executive member who took it to the High Court three years ago is to have his legal bill of approximately €76,000 paid by the teaching union.
This follows a specially-convened meeting of the union's central executive committee on Saturday, where delegates debated a motion calling for the decision to pay Mr Bernard Lynch's fees to be rescinded.
At the meeting, a letter from the union's legal advisers is understood to have been circulated suggesting Mr Lynch might only be entitled to payment for a quarter of his fees.
However, delegates voted by a significant majority to reject the motion. This means Mr Lynch, who did not attend the meeting, will now have his legal costs met in full by the union.
Earlier this month, it was revealed that 29 members of the union's executive had written to the union calling for the proposed legal settlement to be rejected.
In a sign of the unease among some in the union at the deal, they asked for no further action on the matter to be taken until Saturday's meeting had taken place.
However, in a measure of support for Mr Lynch within the union, others wrote letters to ASTI president, Mr Pat Cahill, stating their belief that he had taken the union to court primarily out of a point of principle.
As a result, they called on the ASTI to pay any outstanding legal bills he had incurred, a decision which Saturday's meeting subsequently ratified.
Mr Lynch, a member of the union's standing committee, took the ASTI to the High Court three years ago to force it to allow him to attend its committee meetings.
One of the union's most colourful members, he had previously been accused of disrupting meetings of the committee, and was refused permission to participate in them.
Last April, it was agreed that Mr Lynch would drop his legal action against the ASTI if it paid his estimated legal fees of €76,000. This followed a vote of its standing committee allowing the move.
Union sources said the signatories were not necessarily looking for it to be overturned, but rather that it would be reviewed again by the union's standing committee. However, others yesterday pointed out that the decision was taken to prevent the ASTI incurring any further costs in the case.