Remove crimp from PEX?

I recently did some plumbing and ended up bringing the lines for one sink through the wall too high. I don't want to toss out the shutoffs just because they are crimped to a pex line.
Is it possible to cut off the crimps? Any easy way to do so?
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Can you pull the shutoffs back thru the wall and push out other holes? That'd probably be easier.

I'll bet there's a tool for this. Short of that, cut the pex off the shutoffs and see if you can get a beefy pair of side cutters or bolt cutters to grab the crimp. Or cut it with a metal cutting wheel on a dremel. Obviously, if you gouge the nipple, the shutoff is toast.
The bit of pex under the crimp is toast too.
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It depends on the PEX as to how you remove the crimp. For the stuff I use, Zurn, it is attached to fittings via a copper ring. You cut the PEX tube then use a special cutting tool to remove the ring. I suspose you could also use a Dremel and a cutting wheel - its just a copper ring, nothing hard or tough. The PEX tube would be toast either way.
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Is the crimp itself PEX (Wirsbo) or a copper ring ? If PEX, a sharp utility knife- if copper, a dremel or roto-zip rotary tool with a small abrasive disc should cut thru it.
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