The https://loom.cc/faq system avoids this sort of nonsense altogether. An asset type such as 2fcb2b81bb96bb51cec88edcb4b9a480 might represent a real underlying asset being traded, but only the true issuer of that asset could create new units of it.
Anyone desiring to sell that asset short would have to create a brand new distinct asset type such as 6b17a53d425dbb15f933b98ace93e587. This new asset type would represent just that one individual's liability to pay back the original asset. So the new asset type would in effect be a simple loan contract.
With this approach, the supply of the original asset type 2fcb2b81bb96bb51cec88edcb4b9a480 remains completely unaffected, and nobody needs to panic.
Or, more conventionally, visit the loom.cc web site and send an email from there (click Contact).