The UAE has the ADCOP (Abu Dhabi Cross Oil Pipeline) to move oil to beyond the Strait. It has a capacity of ~1.8Mbpd (million barrels per day) so is only a fraction of the UAE's total oil exports and a tiny fraction of the oil exports impacted by the Strait being closed. It's also being used already. I don't know how these particular oil exports have been impacted. They are beyond the Strait but not by that much. Iran is still entirely capable of harassing shipping there.

I believe the US has given tacit approval or is behind this move entirely for what comes when the Strait inevitably reopens and that is to get the UAE to export well beyond what they might otherwise as an OPEC member.

The UAE like most GCC countries is entirely dependent on US arms to maintain their regime so I simply cannot imagine them doing this without the US putting them up to it or looking the other way.