The tension is continuing to build at the Colorado Springs Symphony, where the musicians have labeled their management’s talk of a bankruptcy filing as “blackmail,” and the music director has threatened to resign if Chapter 11 becomes reality. None of the involved parties denies that the CSS is in real fiscal trouble, but it’s a matter of perception: orchestra execs contend they are doing their best in a bad economy, while the musicians claim that management created the problem and is now trying to avoid culpability.