Yes, you can unzip the map, then go to the following file to edit a few numbers. rowCropSystem-->foliage-->soybean-->soybean.xml
Open the soybean.xml and you are looking for the following information to edit.
plantSeparation="0.125 0.125" plantOffset="0.0625 0.0625"
Change the plant separation and plant offset to higher values (2x, 3x, 4x, etc.). This should get you your wider row spacing. Save the file, zip the map back up and try it out.