Hello I have an X360 S that gives me the RDOD with error code 0031. When attempting a reflow, under the Xclamp I found a piece that was "out of place" aka was not in line with the others and one end was not connected to where it should have been. The part im talking about was one of these things...

when i touched the thing (barely) it popped off. Amazingly I recovered the piece and still have it. I try to use hot air to solder it back to the board but it just blows out of place. It seems to be too small for me to solder back on by hand. How would I go about repairing this? Would this cost a lot for a professional to repair? What is this part? Is it important? thx