Turns out the student working with me broke it off when removing the fuel line off the right tandem pump. So it just happened yesterday w/ no time running with it broken (right tandem pump is already new btw)
I replaced the fuel lines as they were all dry cracked and while I was there -might as well. The return lines had to be sliced off the fuel rail hence the large split in the line in the center of the picture.
I plugged the hole as well as the smaller line above it that it fed.
I did an EGR delete on the V10 and this feed was no longer required.
NO MIL, no pending codes.