When using the embedded viewer to submit your URL, after you have your scene lined up, you must switch out of BEV and then back to BEV and then re-set direction and zoom level before the URL will work properly. It's always a good idea to test the URL by clicking "Direct View".
http://www.bing.com/maps/default.aspx?v=2&cp=32.732025913452894~-117.1519173681736&sty=o&lvl=2&tilt=-90&dir=0&alt=-1000&scene=6262449&encType=1
http://www.bing.com/maps/default.aspx?v=2&cp=32.731809308629494~-117.15147748589517&sty=o&lvl=2&tilt=-90&dir=0&alt=-1000&scene=6262449&encType=1