As I recall from previous instances of issues of this nature was that there wasn't much that the user could do. Some have tried restarting the phone that would usually get rid of the glitch at least for some time, others tried resetting settings with some success, some have restored their phones. Not sure if there was anything in particular that really got it all sorted out for everyone as it was just a weird glitch that popped up for some here or there at times. At one point Apple had an update that listed one of the fixes/improvements dealing with unresponsive screens, so perhaps that also contributed in getting rid of that glitch for some. Not sure if it's like that in this case, but so far it sounds like it.