You can go into the advanced settings - > pages and there is a setting named 'EnableBrowseAndEdit'. Please turn it off and restart the site. This will disable the in line editing completely. Also there is a permission if you need to turn it off for a specific user.
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items