How to prevent remaining callbacks from firing when user presses 'reload'?

[SkyPages]

I have a complex animation with nearly 50 svgData sets. If the user presses 'reload' in the middle of the animation - the remaining callbacks still execute at the same time that the animation reloads... is there a way to prevent this?

You can see it live (use Chrome - b/c there is a safari console error for reload in 1.6.1 & 1.6.2)
CodePen