Taylor truly doesn't know why he does it, he's not sure if it's helping. He is just trying hard, so I'd say it's not on purpose.
There's an image floating around of Kevin Schwantz coming into the chicane at Donnington with an inside leg dangle. Circa '93, Lucky Strike Suzuki.
Yhe original laeg dangle came from 25o riders pulling thier foot from under the shifter using a race pattern to reposition the foot back to where it was supposed to be.
If he is, he's a long way from the pits. I think that's Infineon, after you come up over that rise into the really slow right>left chicane
I remember seeing Mamola like this a lot in the early eighties with his outside foot off the peg. http://motoplanet.info/SlideShowRid...ent/Mamola cornering his Honda '85_large.html