I think you have done the correct thing and I hope the cache owner is grateful for you rescuing the cache.
I would keep an eye on the cache page and if the owner doesn't disable or find a new location and update the cache page very soon, I would write a note to explain that the cache has moved .... so that others don't waste their time looking for it (if you haven't already)
GAGB member since 2005
GAGB Committee member 2010 to 2016 (Chair 2012 to 2015)
UK Mega Event Chairman 2009 (Weston-super-Mare)