I know how frustrating it is when it's clear to anyone in possession of actual logic that you're not trying to generate off-eBay sales by telling people what you're selling on eBay.... I must say, this is one of the most 'out there' ones I've heard of (they did me for having 'custom orders welcome' in my listings, which I had there because I design and handcraft items with practically infinite possibilities, and had a long history, which eBay could have easily checked, of creating listings on eBay for people who requested a custom item). 

The sad thing is, it is virtually impossible to get eBay to see the error of their ways, they'e inexplicably (and selectively) paranoid about this particular policy, and once they've decided a certain word or phrase breaches this policy, there's pretty much no if's, but's or two ways about it. 😞

I'd personally recommend taking a slightly different tact to achieve the same thing. eg Rearrange the listing title somewhat: "1m Fabric", then simply explain in the listing that orders of two+ metres will be a continuous length (where applicable). I'd update the rest of your listings as soon as possible, because you can never tell if/when they'll hit you again, and too many policy breaches may result in account restrictions.