Crushing was probably not the only danger you were in there - even if the thing would have just fallen and imploded next to you, that could have been pretty dangerous as well...
It is very difficult to break a CRT from the front, even deliberately. The neck is fragile but a CRT TV falling on its face (which is what tends to happen as they're very front-heavy) is far more likely to break the case or the boards inside than the tube.
