Impersonation steps and SPD 2010 workflow stop with error issue

1. 
   

   I had created one form library to submit the InfoPath Form and I granted the contribute permission on that library to all users.

   
   


2. 
   

   I had created the SPD 2010 workflow to get the approval base on user department.

   
   


3. 
   

   After checking the department of creator, I removed the permission of creator from that library using Impersonation step. (I don't want the creator to see the form again)

   
   


4. 
   

   After department head approved, the workflow was stopped with error and it cannot go to next approval step.

   
   


5. 
   

   I have admin right on the site collection, when I re-run the workflow, all the approval step was fine.

   
   
   
   
   • 
     

     Is there any permission to grant the creator to continue the workflow step?

     
     
   
   
   • 
     

     Is there a way that I can remove the access from the form which they submitted/created?