Yes you can, but I generally make sure the console is unplugged when I do. Not sure if its necessary but I err on the side of caution. It doesn't look like you used flux, and a few of your points look a bit burned. The chip flash wires also seem to be in need of touching up in a few spots like TDI and TDO. Your CPU rst point is pretty burnt, and if you could pic the green and blue nand wire connections I could look at that. On the clk point on the bottomside it appears you have a strand of unused solder glued in and shorting resistors to each other. I would clean everything up with alcohol and qtips, redo all motherboard points with fresh solder and flux along with the programming points on the chip, and then attempt the re-flashing of the chip and ECC.
Edit: Actually, before you try reflashing the chip or board, get that solder strand up, touch up the nand wire points, and try and reflash the original nand back. Unsolder the grd and vcc points from the chip and try booting stock to make sure nothings burnt out and we aren't chasing our tails here. If all that works out, then do the above.