That looks clean, I think the guy who did work on my car before replaced the rubbers on that. The sending unit looks okay too.
Yeah, I think that could have started the syphon effect initially, but it kept spewing out gas for a good 5 minutes or longer after I stopped the pump. Hell, it was still piss'n gas when I got it home. (Had it towed as I panic'd once gas started going o. The exhaust) honestly, think it probably would have stopped if I put the cap back on right away. I got the proper factory gas cap after this to make sure I could get a good seal.
If gas is coming out the vent, the line itself isnt clogged right? Not understanding how that'd help