Two things can be true at once:
Loan originators can and sometimes do try to influence the outcome in order to cheat the lenders with whom they are doing business
and
Lenders can and and sometimes do cook their own books to do "justify" deals they shouldn't be doing.
Cutting the LOs out of the loop only addresses that particular conflict of interest. It doesn't touch the lender-misconduct which also occured before and which continues to occur. Nor does cutting the LOs out imply some higher moral virtue to the conduct of the lenders - they're still doing what they were doing before. With that said and WRT the conflict of interest in allowing the sales types to control the appraisers,
less is still less. Cutting the LOs out completely justified the damage to those LOs and their appraisers.
If you want to say the LOs (internal and external alike) were only doing 25% of the crime (!!!!) then that's still fine because 25% less is still 25% less and it still completely justifies the collateral damage to appraisers.
Your economic interests aren't worth the reversal. They never were. You were an afterthought at best, if at all.