Default lancher touchwiz and lockscreen 3rd part

Hello everyone, I expose my problem:
I have set as a default launcher lockscreen. Now if I am on the launcher there aren't problems, but in other apps in recent app I get the TouchWiz and๒ if i kill all app from lista, i kill the touchwiz.
So my question is if you can remove the TouchWiz from recent app and use the lockscreen third-part.