Impossible. The "contract" with Ned was verbal and Justin bought that steem in the deal so it is his without restriction. I'm sure he was not told of the ninja mined stake and it's purpose but that does not change the fact that there was no written contract expressing exactly what could and could not be done with that STEEM.

As for us (our witnesses) locking up a portion of said stake, I find it highly unethical. I do not like businessemen like Justin and am definitely not on his side. As I see it though, he was sold a company and all its holdings and they are now his to do with as he wishes.

It is obvious that fuckingNed misrepresented what he was selling and Justin did not do his due diligence to know exactly what he was getting but that does not change the fact that Justin now owns that STEEM and can do whatever he wants with them.