Tahu stands corrected. Though if I scrutinize media I think Tahu’s front foot is going sideways and the rear one is going backward here:
2003 Tahu Nuva’s feet go with his front foot going forward and the rear going backward.
But we already have a set from 2003 of Tahu Nuva with his lava surfboard, so I digress. What’s new is 2001 Tahu with a lava surfboard.
Admittedly, though, the point is less about footwork - realistically you’ll be moving your feet while surfing to adjust - and more about the fact that Tahu is facing forward than to the side while surfing.