Hydroplaning below 80 km/h ~49 mp/h is rare and the risk of the wheels loosing contact to the ground increases with speed. So not sure if this was really hydroplaning.

As a tip for others: If you ever encounter hydroplaning make sure not to keep your steering wheel straight (or at least: know why you are doing what you are doing) and step off the gas pedal.

In hydroplaning your wheels don't have contact with the road surface, so turning the wheel won't do shit. But as you loose momentum your wheels will regain contact appruptly again at some point. At that point it really matters how your front wheels are oriented when you do so.

If your front wheels point hard left and there is a dry part of the street you will be yerked directly into oncoming traffic for example.