It is NOT a big deal, however as I said before, I think you will find they mean the application for the new AOC.
This is from the CASA site, re how to apply for an Airline AOC.
(Quote}
Step 2 - Formal application
The precise requirements of a formal application are contained in CASA instrument 293/00. You should read that document before starting the application process but in brief you will need to tell us:
The applicant's name and contact details, including ABN. . .The service you intend to provide . .The aircraft to be used and area of operation. . .Proposed organisational structure . .Key personnel qualifications and experience . .Any current or previous regulatory action against the applicant or key personnel . .Services such as maintenance carried out by other organisations . .Proposed schedule for the application process . .Compliance Statement . .Financial statement
(Endquote}
Now it is obvious IF they want a new AOC, that they will have to submit a new application, or change their previous application, because (no matter who signed it) with the resignation of TJ, there have been changes to "key personnel qualifications and experience".
Sure you will find that this is what CASA are talking about, and they have said that they hope to still have it ready on time okay?