Well, I did a Googling and...
The DGCA's report, whilst being appearing to be thorough in determining what happened to the control column and auto-pilot modes, appears to be painfully lacking in analysis and recommendations to prevent similar occurrences and recovery from "upsets." I'm also not totally convinced that the F/O told the investigators really what happened.
Another thing which springs to mind is how does this company get insurance? Are they actually insured? Neither pilot had more than a 1,000 jet time and also the investigator's appear not to have looked into any of the Operator's training records and systems. I do hope for India's sake that the performance of the DGCA and Air India Express is not representative of the standard of her Aviation.
PM