From the Bicycling Magazine I got today:

Page 33

"Banish Lower Back Pain"

Shows two stretches to stretch the psoas muscle (Deep hip flexor).

Page 35

"Balance Your Body"

Shows stretches and exercises to correct for problems from hunching forward while riding, including tight quads and hip flexors and states:

"Stretch you quads, hip flexors, chest and shoulders daily" and then shows exercises designed to strengthen.

My DO recommended (and taught) me stretches. Every physical therapist I know teaches some sort of stretching, as did my chiropractor - even giving classes.

One article stating otherwise just doesn't hack it.

If you suffer from lower back pain, you are likely a believer in stretching.