It's been a couple weeks since anyone posted on this topic but I really wanted to add something.
Last week I was having trouble with this too, I play on a regular ps3 controller.
I was really getting anoyed with the automatic st. C that were coming out when I tried to active HD from a cr B, and then I understood why the st C was coming out (sometimes even st. B).
Here's how I believe it works: Any move that has really short "screen freeze", like light attacks, can use the HD to automatic link a st. C or st. B after the activation. What happens is that you "plink" the activation while cancelling a light attack and the first attack you pressed in the plink will automatically come out after the activation. I started using this for kensou and billy to do with more ease my links to HD combos.
If your problem is that you don't want any of these moves to come out, you're not pressing B and C at the same time. Just don't plink and the dash will come out.
Last week I was having trouble with this too, I play on a regular ps3 controller.
I was really getting anoyed with the automatic st. C that were coming out when I tried to active HD from a cr B, and then I understood why the st C was coming out (sometimes even st. B).
Here's how I believe it works: Any move that has really short "screen freeze", like light attacks, can use the HD to automatic link a st. C or st. B after the activation. What happens is that you "plink" the activation while cancelling a light attack and the first attack you pressed in the plink will automatically come out after the activation. I started using this for kensou and billy to do with more ease my links to HD combos.
If your problem is that you don't want any of these moves to come out, you're not pressing B and C at the same time. Just don't plink and the dash will come out.