WEVO has new, stronger mounts that can be welded in.
You can drive it without risking your safety but I would not drive it hard and get it repaired ASAP so as to not cause any more damage.
You COULD remove the sway bar altogether until you get the mount repaired. Your handling will be compromised but it will be driveable.
It seems Buckley has introduced a mount as well.
http://www.pelicanparts.com/catalog/shopcart/911M/POR_911M_SUSshk_pg9.htm