According to the story I read, the guy may have had some intent, but the plot was fabricated in its entirety by the Feds. Sure, he may have decided to do it, but the feds incited him to do it. This seems to be a reoccurring theme in these types of busts. Can't help but wonder if he'd never have done anything if the feds hadn't incited him to.
The FBI recruited him, trained him, propagandized him, and paid him. They were the ones to provide him with the explosives.
OK, so who exactly is the "Terrorist Mastermind Organization" in this plot?