Slater was convicted of massive ($8 mil.) improper trading in 1979 (for company gain, not personal gain) but only received a slap on the wrist (a $32 fine per each of the 15 counts plus $1575 to the prosecution), so this chess angel has slightly tarnished wings. Here's a photo of Slater from 1977:
I wasn't aware that Slater had been fined. Have you a link to show that he was fined? I've followed Jim Slater's career for decades and he has always struck me as a thoroughly honourable person especially so given the secondary banking crisis and the fallout from that.
ahhhh i shoulda looked it up first :)