I posted about this five months ago on the Mini Loops support forum, here: http://wordpress.org/support/topic/mini-loops-conflict-with-custom-login-page?replies=2
I was just posting about it here, in this forum, since it's a TML issue rather than Mini Loops. I've found a method to fix it for myself, at least until a new TML update comes and breaks it again. I just comment out line 98 in class-theme-my-login.php...
add_filter( 'the_title', array( &$this, 'the_title' ), 10, 2 );
Just experimenting trying different things and that seemed to do the trick for me. Obviously not a permanent fix.