If you can find that again, I hope you'll post it. I suspect there are a number of qualifiers to what you saw - but what they might be, I have no idea.
I can tell you that a stream of photons has been brought to a HALT by running it through cold sodium. It wouldn't be hard to exceed its speed! But I don't think that's what's meant.
Then, there is quantum entanglement, in which two subatomic particles which have been entangled subsequently have instantaneous communication regardless distance. But communication is not "matter."
The Big Bang initially expanded far faster than the speed of light. But does empty space-time count as one of the "things" that shouldn't be able to move faster than light? Because it clearly can.
Then there are warps in space-time. They exist. They happen near gravitational sources. It might be possible for matter to surf on space-time ripples... and since space-time can move faster than light, maybe the matter riding upon it can as well. (I'll further note that if you're futzing around with space-time, your measurements of "speed" will be in question.) But this is hypothetical. It's not something anyone has ever seen.
Please tell us more.
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