disklabel recovery

[Gal Ben-Haim]

Hello,
Im running FreeBSD 5.4
I accedently enabled swap on /dev/ad2s1c (raw label), this destroyed my
disklabel, the data is still on the disk (after doing 'cat' on the /dev
device).
When I try to mount the filesystem I get: the mount is successful, but when
I 'ls' the mount point I get bad file descriptor.
I tried to create a new label with 'sysinstall', but the label which is
created seems to be with invalid values.
I tried running scan_ffs, after it read all the blocks on the disk it
outputs 'input/output error.

is there any way to reconstruct the label properly or access atleast some of
the files ?