NULL directory name in SunOS 3.5

[Andy Dougherty]

A user here created a subdirectory with a NULL name, but containing some
important files.  He said it was created with the command
                mv dir1 dir2/
where directory dir2 already existed.  (I haven't tried this command
because I don't want to compound my problems.)
    My questions are:
        1.  How do I get the files out of the null directory?
        2.  How do I remove the null directory?
    I have tried find and tar to extract the files, but to no avail.
fsck reports no problems.  I used ncheck to generate the inode numbers
of the files in the directory, but
        find . -inum inode_number -print
still will not find the files.
        Any suggestions?  We are runnin SunOS 3.5.
                                        Andy Dougherty
                                        A_DOUGHERTY at HVRFORD.BITNET