Bashley manager Geoff Butler accused Tooting & Mitcham's goalkeeper Jonty Venter of an "act of thuggery" against 16-year-old striker James Totczyk.
The teenage frontman was stretchered off in Bashley's 2-0 defeat in south London following an incident that sickened the watching Butler.
He said: "James was chasing a ball he was never going to get and it was actually in the keeper's hands by the time he got there. But instead of moving out of the way or turning his shoulder on James, this big keeper, who must have been 6ft 4ins and 14 stone, has put his foot up and there's six studs gone into James's groin.
"For the keeper to do what he did was a disgrace. He had to be sent off for that, but the referee said his angle wasn't very good and neither linesman saw it. It was scandalous, but fortunately James isn't seriously hurt."
Top-scorer John Hastings and Wayne Cort netted for Tooting.
Newport IoW, free from the jaws of relegation, signed off the season with a 3-3 draw at Molesey.
After 24 minutes the Islanders were two up, courtesy of Chris Bridges and a penalty by 16-year-old Michael McEnery, but Russell Pym (penalty) and Mark Longley brought the Surrey side level.
Newport hit back with the goal of the match - a sweet 35-yard volley from Ashley Wright - but the Moles' ex-Fleet man John Murphy headed home the 85th-minute equaliser.
John Linington, taking his last league game in charge before handing over to Steve Leigh, said: "It's been a long, hard season, but we've done really well."
Linington takes his farewell game in charge tomorrow night when holders Port face Brading in the Isle of Wight Gold Cup final (Cowes Sports FC, 7.30pm).
Skipper Andy Darnton was on target for Fleet in their 4-1 defeat at Met Police. The north Hampshire club finished 19th, three points clear of Dorking, who take the plunge with Croydon.
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