How I Met Your Mother Finale Photo Mystery: Why Is Barney Wearing [Spoiler]?

Neil Patrick Harris wrapped up his nine-year run as How I Met Your Mother‘s Barney on Thursday with…short shorts?!

In the following behind-the-scenes photo of the actor filming his final scene (as director/executive producer Pam Fryman and the crew give him a round of applause), Harris is seen wearing a very casual outfit in lieu of one of his character’s classic suits.

Did Harris say goodbye to the show with one last flashback? Or was it a flash forward? And is he purposefully hiding his left ring finger again?

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Why do you think Barney has forsaken his usual duds? Hit the comments with your theories!