Cody Gakpo's shot after a corner was so wayward it hit Ogbonna, Soucek and Areola before going into the back of the net.
Fans have been reacting to the bizarre own goa, which has officially been awarded to Areola.
Laurie: "This second half has been so much better. Just makes it even more frustrating that we couldn't show this level of effort and energy when it actually mattered."
AamsLFC: "Jesus fuck, that's the sort of bullshit goal that wins you titles. Gakpo's shot was going somewhere into Stratford before it took three deflections and rolled in. We've conceded rubbish like that all season, glad for once it went our way."
DiabloLFC: "Great Tika-taka play from West Ham to score that goal."
Aarv: "We need this luck. But damn how wide was gakpos shot."
Oli: "There's something satisfying about scoring terrible ugly goals."
Moss: "We got the goal but that shot from Gakpo was extremely bad. Our forwards need shooting practice."
