K, no vid, sorry, I made one but it wasn't worth uploading cause it didn't show much but my steering technique.
Anyways, I'll try to explain it better, I set the car up (speed, line, and agle wise) so that when I need to hit the e-brake the car has an angle/path correct so that I can keep my left hand on the correct spot (with thumb on the cross bar by the d-pad) and then I know where the X/[] button are and just use my right thumb to push both buttons at the same time. Took a few laps at Sugo International to perfect this technique. but it always works for me. The way I see it, if you're steering angle is so high (above 180* from center) that you can't have your left hand on the cross bar where it should be, then you don't need to hit the e-brake. You can gas it or hit the regular brake (acts same as an e-brake at high angle) and let the angle of the car slow you down. Once it comes back to a balanced position I'll hit the e-brake. Or if I'm desperate and at high angle I can find it anyways and somehow I usually do. (just glance down at it.)