CCTV investigations in London Road, Kingston found a mound of fat the size of a bus had reduced the 70 x 48cm sewer to just 5% of its normal capacity.
Thames Water has begun repairs to 20 metres of the damaged pipe and work is expected to take up to six weeks to complete.
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Plymouth Argyle's ball boy Jake McLean, said he felt 'disrespected' and angry when he was pushed to the ground by the Orient captain.
The 34-year-old was approached by the teens at around 10.50pm on Valentine's Day asking for a cigarette.
Former boxer Michael Watson and his carer were "sprayed in the face" by attempted robbers and "dragged" from the car they were in.