How do I replace a broken YouTube link?

A page I’m editing has 4 sections with a working YouTube link and one section with a dead link. The first 4 tabs load the piano and YouTube link just fine as long as I avoid the last tab with the dead link. But once I load the tab that has the dead link, the option to play the YouTube video disappears altogether from all 5 tabs.

If I try editing the tab, it attempts to load the dead link, but then hides the sync bar once it fails to load. I tried remaking the tab from scratch with the correct link, but it wouldn’t let me submit it because of the existing one. How can I resolve this problem and replace the YouTube link?

Here’s the song in question. The tab causing trouble is the chorus lead-out.