Clear previous state's parameters from Soft Back Button history?

Okay so I have a state that accepts a parameter. When it is available, it hits the server, pulls data and pushes that data into the next state so a user can take action on that data.

I have something like:


as example:

Which works fine and I can pull the user information on landing on this page. What I do though is if that userId is not there I land on a search page to allow a user to search by text input. If the userId is present then I pull the information by Id and send the user to a new state:


The back button wants to take me to:


I need the back button to just be:


How can I overwrite the last back history item to have NO state parameters?