Originally Posted by
DonRafa
Well, thanks everyone for your input and apologies for sounding a bit paranoid but it I had never experienced that and was quite shocking.
Bike/fork is most likely fine. If you're worried about steerer, it's not too hard to drop the fork out to inspect for damage (crack).
Maybe you should wear a helmet if you continue to ride rollers on a tiled floor. Probably some hard cabinet edges nearby too, another hazard.