The bigger issue here, and the one that Alex at Facebook seems to gloss over - if Wes got this data using a 2 year old well known exploit -- then who else got it without anyone knowing?
While Alex may have a right to be upset at Wes for taking data, Alex should recognize Wes is likely the least of his worries now. Wes wasn't/isn't a professional security researcher... and he was able to do this. That should frighten Alex, and Facebook should have been much more rewarding to Wes for forcing this issue to be taken care of.