Andy and Sharon collided and were rushed to the nearest hospital.
Kerri, Andy's niece, who took the photos, told SWNS: "We didn't know how serious it was until we saw them on the floor."
Sharon told the news agency: "The paramedics were pretty worried about Andy and cut his t-shirt off and blue-lighted him up to Southmead Hospital."
"All I could hear was the paramedics saying he was going in and out of consciousness. Our feet were sill entwined and they had to separate us.
"We are ok now but Andy has a bruised back and neck and my back still hurts."
She added, "I think we're going to go for a slow one for our first dance."
BuzzFeed News has contacted both Andy and Sharon for further comment.