Rotting cotyledons

I don't have any pictures but 1 out of the 48 sprouts that I have had so far has what appears to be rotting cotyledons, it is a Nirvana Blue Mystic that was late sprouting out of the ground, the stem still looks healthy but the cotyledons just never seem to have parted and they are a rotten brown colour... I have removed it from the rest of the group and I am assuming that it is just going to have to get binned but even tho I highly doubt it I thought I'd see if there was any possible way to save it?

are the first true leaves ok still?

It was about 4 days behind the others coming out of the ground and there are no true leaves just horrible brown cotyledons... I don't suppose there's any hope of it bouncing back?

It's not a big loss to me if it does die, I've still got another 9 Blue Mystics and a whole lot of other strains growing... I'm just curious if I've got anyway to revive it?

The only way to tell for 100% is to let it go for a bit longer and see how it does. a miracle could happen. although im 99.9999% sure it wont. i personally would just get rid of it but if you want to wait and see there is really no harm in trying

Sadly I thought as much...

So I stuck the sick little bugger up with the regular pot plants after removing it from the other sprouts/seedlings etc... and something ate it I know it was probably going to die anyway but I was disappointed to go outside this morning and find that it had been eaten to the ground...

oh well, i find it best to focus on the positive. at least whatever ate it ate that one instead of the others.....