I did not intended to be a advertisement, but I thought if you are in Aarhus then why not. It would nice to meet some local programeer. I donät read reddit, facebook or twitter.
I'm not sure I believe the "owner" is telling the truth. If he forget to pay the bill (why isn't it a credit card recurring subscription?), or the credit card failed due to insufficient funds, then he would have received multiple emails warning of service termination.
Why aren't you backing up your code to private repositories, ones that can be had for free from bitbucket.org? Even Dropbox would have been a good alternative, although you might want to encrypt anything sensitive!
If you're telling the truth, I'm certain you need to walk away from this sketchy owner and this bankrupt startup.
I work full time for one company but do side consulting work. For my side consulting work I use SkyDrive (free) on my notebook to store my code which automatically gets synched to 3 other computers. I use a TFS instance for source control on a separate server in my house. I then make manual backups every day and copy them to an offsite FTP server. That's 7 copies of my code including 2 offsite backups (SkyDrive and FTP server). You could do this yourself with free / open source versions of what I use. Just get a Dropbox account and set up a script to copy to it every day.
It might just be me but I loathe re-writing code.