FYI, spoke to my LOR, and he said that this statement doesn't definitively say that treif was served, but rather there is a chashash. As such, my psak was that since the food was no longer yad tzoledes bo (after 30-40min travel time from the restaurant), any dishes/utensils used do not need to be kashered.
So they DEFINITELY do need to be more clear, if that isn't the case.
I am not qualified to argue with any rav, but if it a matter of interpreting an English statement, I don't see anywhere in the statement that shows any doubt about kashering utensils. In fact, if there was any doubt, they either would say to wait longer or just simply say there's doubt.

And now after reviewing my post, my guess is the wording "it is recommended" is being interpreted as it is not mandatory. Though the end of the paragraph says "[customers] are advised", which is definitely stronger language. Guess it can better be clarified, though my assumption is the quick response says all you need to know.