In "A War for Friendship", after Ignis was stopped from taking Celestia down and claiming the throne, what happened to Spectrum Brush when he dissapeared for 11 days?

As Zecora tries to regain her memory about the day that Ignis atttacked Equestria, she discovers an injured alicorn in the Everfree Forest.
A stallion, without a name, and a rhyming zebra now work together to uncover the past that they have lost.

And the only way to shed light on the truth: is by reaching out in the dark.