"Complete with authentic Costumes, lights, lasers, Strobes & plenty of audience interaction!" he wrote.
Curtis believed in cover-ups, according to his ex-wife, who reported him to police in 2007 for being "extremely delusional, anti-government, and (for feeling) the government was spying on him with drones," according to the affidavit.
He wrote on his Facebook profile that if the federal government were "using or monitoring/using this website or any of its associated websites, (they) do NOT have permission."
After two bombs exploded at the finish line of the Boston Marathon on Monday, Curtis addressed the crime on his Facebook page.
"This world is not what it used to be and the hopes of all are not what they 'USED' to be. We have let God down. We removed prayer from schools in 62 ... we have staged wars simply for profits in oil and drugs ... we have lied our way from the capitol to the pulpit. We the people should be ashamed. I weep for the future of our children. God bless."
Curtis's family did not return messages left seeking comment. His brother said in a written statement Wednesday that the family had "no reason to believe Kevin would be involved," but that relatives knew "very little" about the case.
"Until my family gets some answers and we have a chance to talk to my brother, I can't comment further," Jack Curtis wrote.
ABC News' Matt Gutman contributed to this report.