The default layout for Woo has the image and content in one container, with the image set to 48% of that width. The BB module is placing the image inside its own container which creates the problem. Maybe there is an option in BB (or should be) to override that CSS. In the meantime you can try this CSS:
.woocommerce #content div.product div.images,
.woocommerce div.product div.images,
.woocommerce-page #content div.product div.images,
.woocommerce-page div.product div.images {
width: 100% !important;
}