I'm currently working on a new DOM-manipulation library that builds on top of the good parts of Angular.js and Singult, so I don't plan on doing any new development on Singult.
As for your particular issue, you could express it in a semantically cleaner way by separating out your data rows (what you're using unify with) from the controls.
You could put the controls outside of the table entirely, of course, but since it sounds like you want them inside the table maybe you could use multiple table bodies.
cheers,
Kevin