I was at the Department of Justice at the time, so I'll speak from that perspective.
The goal was not to avoid sending the documents to parliamentarians, but rather, it was to send them to the authorities who could handle that kind of information. As we can see today, the information in the documents was extremely sensitive. Until the corrective measures were taken by the lab, it was not in the interest of Canada's security to reveal the information again publicly. The goal was not to avoid sending the documents to parliamentarians, but it was to send them to the right forum, to the people who could handle them.
I understand that those discussions took place in the political rather than the administrative arena, but that was the issue.