At the end of the day, the LAME who certified for the defect should raise an SDR on a Form 500, if he/she hasn't already? Also, a report should be made independently to CASA, followed up with a letter explaining what the situation is to both the Minister for Transport and the Opposition Shadow Minister. They can only ignore the alarm bells for so long.
Agree 100% if the flight crew did what you are accusing them of . There are a number of alternative explanations that happen every day that can explain this event.
Be careful - make too many unsubstantiated accusations, accuse too many of the 99% (pilots) of illegal activities, and I give you about 10 minutes before you drive a wedge between our groups that will take years to remove.
LAMEs are not perfect either but I accept their word when they tell me that they mistakenly wrote the wrong date in the Check 2 and they don't need to do another one with 5 minutes prior to pushback because "it really was only done just last night."
The pilots want you around - word of advice - don't alienate them.