Richard Barnbrook's Standards Hearing has been postponed, after he submitted a last minute piece of evidence to the committee.
The joint committee decided to postpone the hearing, meant to take place tomorrow afternoon, in order to "properly consider" evidence submitted to them last night.
Barnbrook had previously failed to submit any of this evidence despite repeated requests over the last few months.
This is the second time that the date of hearing has been moved.
Last month Barnbrook sent a doctors note to the committee, on the morning of the hearing, stating that he was suffering from a "stress-related illness."
He has not been seen at any London Assembly meetings since.
A redacted version of the evidence submitted by Barnbrook yesterday is likely to appear on the GLA website soon.
It is now expected that the hearing will be moved to September 4th although that has not yet been confirmed by the GLA.