Ivorian defender Bailly sprinted off the pitch despite being Mourinho's fall guy.
But the United boss attempted to publicly keep things cordial by rushing to the edge of his technical area to hug Bailly.
The player threw his arms around Mourinho before rushing to the bench.
Moments earlier E Woodward - the United executive vice-chairman - was caught merely folding his arms and staring in front of him in disbelief at what was unfolding.
Jose Mourinho: The last time United came back from 2-0 down at HT was 2009 (Image: GETTY)
Jose Mourinho: When the score went 2-0, the boss took action (Image: BT Sport)
Jose Mourinho: The Magpies heaped more pressure on the boss (Image: BT Sport)
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According to body language experts, when someone crosses their arms it usually means that they're closed for arguments.
"By crossing the arms, a barrier is put in front of the body, as some sort of protection," experts say.
"Putting an object in front of you may be the same signal. Another reason for crossing arms may be that you're feeling vulnerable or insecure."
Newcastle fans taunted Mourinho with chants of 'you're getting sacked in the morning' while thousands more got stuck in on Twitter.