Resolved questions
What's the meaning of "worm their way out"?

We rode the rest of the way into town like that, in silence, a few trembles held just so in my hands. He dropped me on a wide street. The sun hovered half hidden above the pale buildings in the rain. A few streetlights were on and gave off a thin glow through the gray afternoon, and after I paid the driver for the trip I began to walk toward the edge of town. I passed in and out of circles of light made by the sun through the clouds and the useless lamplight. By the time I reached the end of Turnerstrasse, the lights had adopted their own rhythm. My passage through them became more regular, something firm to which I could commit myself. I figured Sterling and some of the other guys would worm their way out to the bars to raise hell. I hoped I wouldn’t see them, and not just because I’d gone AWOL. The mere thought of him made bile well up in a kind of raw, acidic burn at the back of my throat.
What's the meaning of "worm their way out" in " I figured Sterling and some of the other guys would worm their way out to the bars to raise hell."?
Thanks!