Brian Cullinan, the PricewaterhouseCoopers managing partner who botched\u00a0the Best Picture award presentation just three minutes after tweeting a backstage photo of Emma Stone, was specifically told not to tweet during the ceremony, People reports. A source apparently connected to the awards told People that Cullinan was \u201cwas asked not to tweet or use social media during the show.\u201d \u201cHe was fine to tweet before he arrived at the red carpet but once he was under the auspices of the Oscar night job, that was to be his only focus,\u201d the source added. \u201cTweeting right before the Best Picture category was announced was not something that should have happened.\u201d At 9:05 PST, Cullinan tweeted a photo of Stone holding her Best Actress statue backstage; three minutes later, at 9:08, he handed Warren Beatty a duplicate envelope for Best Actress instead of the envelope containing the Best Picture winner, triggering\u00a0the biggest mistake in Academy Awards history. The Stone tweet, along with several others\u00a0Cullinan reportedly sent out during the ceremony, were all later deleted. A screenshot of the Stone tweet is below.