Ah, awesome! It's a private property so I just added a setter but that works perfectly to freeze the wave/jitter anims. It doesn't work for the draw anims, but I tried adding a simple bool called "frozen" and added it to this line in the "GetDeltaTime2" method:
return !applicationFocused || frozen ? 0f : ignoreTimeScale ? Time.unscaledDeltaTime : Time.deltaTime;
It appears to work to freeze the draw anims, but I have to investigate further to see whether or not I'm breaking something else by shoehorning this in.