Can you reset a password for a restricted profile? I have a restricted profile that is asking for a password, and it is not taking it. As the owner, I would like to be able to reset this password.

Long Story: The restricted profile is my son's. Since it was setup we have always used a pattern to unlock. I made the mistake of locking his tablet remotely using Android Device Manger, and setting a password. That password did not work on his profile. I switched to my owner account, and it worked fine. Now, however, his profile is asking for a password to be typed, and nothing works. I assume he set it to something he has forgotten since he has used pattern lock for a long time. ADM seems to have reset the screen lock to password instead of pattern on the profile without resetting the password itself.

So, any way to fix this short of deleting and creating a new restricted profile?
I spent three hours on the phone with Google yesterday for the same issue. They said there is no way to reset the password.  They said I have to delete and add the user back, losing all data, pictures, game progress, etc.  There is also no way to prevent a child from setting a password.  Clearly the people at Google have not thought this through. It is definitely not a "kids mode".