I believe he is referring to donations from the old donators, funds accrued by selling forum ad spaces, and maybe forked coins earned from both of those. I could be wrong of course, but this is where I would guess he is referring.
Correct. The investigators will want to know exactly when the donations became his property. I'm going off nothing but Theymos' words here on the forum he controls. He pledged to use donations for the improvement of the bitcoin community, but instead he gave them all to his friends. Did you know that
every single person Theymos entrusted with bitcoin stole from him? When someone steals entrusted property from you, and you reward them, it shows your corruption, and you usually go to jail.
Both OG and Theymos simply got too greedy. They could have walked away years ago and been "set for life", as OG said.