I doubt it
Anyways I can live with the bug as I've sony earphones as well. But it would be nice if you can fix it out ,well without having the earphones though :laugh: Is it something to do with the voltage? Check this thread
http://talk.sonymobile.com/t5/Xperia-S-SL-acro-S/My-Xperia-S-can-t-detect-headset/td-p/148796
I can't really say as I don't know about those earphones that you are using but I am sure a kernel patch, a few lib mods and few fw mods can make this work but it could take time and its a bit of a hit and trial method so it will be list like shooting in the dark to do that without those earphones. I will add this to my to-do list for when I have some free time and will give you the updates.