This is just a theory because I don’t have 3S at home anymore, but…
When I was watching Kuroda’s Urien matches, he was able to punish Ken’s Air EX Tatsu to escape the corner with HK Tackle the other way. I think how this works is…
…when you are facing the right side of the screen, you hold back. But when your opponent jumps over you to the other side, you keep holding the same direction, and then press kick for the Tackle to come out.
Once in a while when the opponent would try to jump over me, I would try to do a throw when they land, but a dash punch would come out instead(or a tackle with Urien). Put two and two together, and this should be how Urien is able to do that Tackle on the other side.
Back to Q, and this is just my guess, but:
The input is probably HK C&DB->charge back->f,b+HP(time it so that the opponent is flying to the other side)->keep holding the same direction even after the dash punch connects->HP.
:hcb:+:hk: -> :r: , :l: + :hp: -> keep holding :l: -> :hp:
I may be wrong with the correct button for the C&DB, but I’m sure that both Dash punches are HP. Switch around the inputs just in case.
This is also probably how Kuroda was able to do an immediate Dash Punch to close in on Yuki Otoko during their Coop Cup 4 match during the 3rd round. I was try to figure out how Kuroda was able to do this for the longest time, but after watching the Urien match vids, this is most likely how he was able to pull it off.
Hope this works out for you guys, even though it’s just my theory.