Free Step Dodge

There is a reason that happens.

The stun itself doesn't stop a person from holding, but rather the fact that they go into a backturned state when it happens.

They will keep slowly turning until the game recognizes them as a front facing opponent again during the last standing frames.

So to prevent that from happening, use the stun as early as possible.

You learn something new everyday, thanks. I did freeze for a second before doing my launch

What Rikuto says is correct.