um.... isnt his ground huge? its very long on some pics, and a bit shorter on some others, but still long (i think). you know, under your chip, the big orange strip at the side of the board is all ground. scrape a bit on a piece of that, till it looks shiny, then you can solder the ground to that...
like
this
hmm wait you got the glue-stuff over that... well, you might be able to get enough of that off to attach a wire...
the picture is for a v5 infinity btw, so you can compare a bit (if you didnt already have it)
further, your B wire might be touching the pad thingey behind it, but it could be just shadow
i dont have the diagram for v5 (too lazy to get it), so you'll have to check the connections yourself :P
nice sharp pics ^^ better than my camera can do :P
(btw, the glue above your chip looks yuck :P as if you sneezed or something :P)