Diamond 71, your post is a bit confusing. Who, in your opinion, is at fault? The training captain, or the First Officer?
The only way you would have full intimate details concerning the incidnet, is if you had access to the DFDR, and DCVR. Do you have access to the unedited recordings?
The information you are relating is that which was related to you.
The old saying goes... There is the captain's version, the first officer's version, and the truth... which has been memorialized on the DFDR, and the DCVR.
That said, don't present evidence to which, you, yourself, can not verify.