Not with glass but, fusion has a draft knife plugin that allows more control than the vectric one. I would assume that you wouldn't want to do the loop at all. You could set the lip size too something very small. You could not have it run that loop at all and instead, extend the line past the cut to travel. Then hope that starting that far out would turn the tool.
I've seen several stepper controlled drag knife setups as well. I guess, if you had the correct post processor, you could use that as a rotary axis and lift/turn the tool for the next cut.
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