wp 3.3.1 bp 1.55 bp-gtm 1.95
FYI (and it may well be just my instalation)
On page http://mydomain.com/members/admin/gtm/ the sidebar stays below the content UNLESS you amend file bp-gtm-system/templates/gtm/personal/home.php by replacing line1 with
get_header( 'buddypress' );
get_sidebar( 'buddypress' );`
and by replacing the final 2 lines with just
<?php get_footer( 'buddypress' ); ?>
I suppose its just calling the sidebar early!
With another theme I got it to work by calling the sidebar early and twice !!!!.
Can't explain - just trial & error