This was NOT jury nullification. 
http://www.oregonlive.com/oregon-standoff/2016/10/juror_4_prosecutors_in_oregon.html
Read it carefully. 
This is about the specific charge of conspiracy to impede federal employees from doing their jobs . 

"All 12 agreed that impeding existed, even if as an effect of the occupation,'' he wrote.

"But we were not asked to judge on bullets and hurt feelings, rather to decide if any agreement was made with an illegal object in mind,'' the Marylhurst student wrote. "It seemed this basic, high standard of proof was lost upon the prosecution throughout.''
 This says more about the jury trying to apply the actual law to the events than nullifying it.