This wasn't a coincidence. There is likely something much more worrisome that is being hidden from the public which they're panicking over.
Something else is happening.
But it's not unreasonable to believe there is something else we don't know about in the economy's "fundamentals" (at least not yet) that actually caused Trump to back down.
We'll know soon enough if Trump had advance knowledge about the bond yields or it's something else far worse.