Whatever you do, DO NOT take a torch to the struts. You will ruin the internal seals, among other problems that will leave you with 4 scrap pieces of metal.
I'd suggest using a die grinder with cutoff wheel, or if you don't have access to air tools or a patient hand, use a hacksaw blade. Be forewarned, you have to be very careful to not cut into the strut body. Just score the perches along the points where it is attached to the strut body and carefully break away the perch.
HTH
