I wrote the follwoing snippet to test writing to the same file I've tied. 
use warnings;
use strict;
use Tie::File;

my @file;
my $template = 'test.dat';

my $o = tie @file, 'Tie::File', $template, recsep => "\r\n"; 
$o->flock;

my @array = @file;
untie @file;

open (WRITE, ">test.dat");

foreach (@array) {
    if (/one/) {
    print WRITE "foo\n";
    }    
}

close WRITE;

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The above code doesn't let me write to the same file even after I've untied it...Any ideas?
Thanks!

In reply to Writing to a Tied File ?? by Anonymous Monk

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