that a prophecy has been fulfilled.
It says in Micah that Jerusalem will be destroyed. Not that starling a prediction, since that's set in the 8th century BC (whether or not that bit was written then), when the Assyrians were already pretty aggressive. Zechariah was written shortly after the return from Babylonian exile, and the quote is just "everything's going to be fine in the end". Nothing, of course, to do with foxes.
The excerpt from the Talmud is just a bit of stupid "everything in the Bible must be true" bollocks. It says "Micah was right that Jerusalem would be sacked, so Zechariah must be right that everything turns out good, because that's in out scriptures too. So don't worry about the fox." It doesn't make sense of course, but it's message was just "don't worry about minor things like foxes". So why on earth should seeing foxes again there be "Proof Jerusalem Returning to Former Glory"? If anyone can be more specific than "2,000 years ago" the bit from the Talmud was talking about was, that might help. 2,000 years ago, Jerusalem was under Roman control. 1,950 years ago, it got sacked again, after a revolt, and the 2nd temple was destroyed. If you really did think that the Talmud excerpt was telling you anything, it would be "bad times are just around the corner".