eddie let him go on a little further , and roland was quite adept at weaving his way around the places where the sand was loose enough to bog the wheels , but the chair finally became mired again and eddie could bear only a few moments of watching roland struggle to push it free , gasping , chest heaving , while the witch ( for so eddie had come to think of her ) howled with laughter and actually threw her body backwards in the chair to make the task that much more difficult - and then he shouldered the gunslinger aside and heaved the chair out of the sand with one angry lurching lunge .