Haha, ok, what i did, is you could say the sock faces the wrong way. i did use the clip. Basically, the sock still points down, just slightly backwards. When I stuck it down into the tank, it still sticks down to the lower part of the tank anyways. No problem with low fuel (having said that, I normally fill up at about a quarter tank - I don't go down to the empty light. but even the empty line is fine on my car).
If you want the sock the right way, and use the clip, you could just bend the bracket out slightly, or space the pump out a bit with some efi hose. From the looks of your thing, even a couple mm would help it clear. But I don't think it'll come off even without the clip.
I can't believe that you cut the bottom of your backet off. There's enough room after you just trim the top barb back a bit. lol. I like that part, because from a mechanical point of view, imo, it would stop the pump sliding down. If I was you, I'd add another hose clamp on (yes I know it's clamped to the hose above). Like I said, I like things perfect, and i am anal.