After 80 minutes, referee Brett Huxtable took the players off the pitch for 10 minutes with the score at 1-1 and Crawley struggling to break the Glovers down.
This was despite the fact the hosts were down to nine men after having Connor Smith and Omar Sowunmi sent off in the first half.
When play resumed, the visitors did eventually make the breakthrough in the 87th minute when substitute Thomas Verheydt headed in a Jimmy Smith cross.
“I’ve never seen that before in my life,” Kewell said.
“It probably worked in my favour when the drone came. It gave me a chance to get my boys and ask ‘what are you doing? That wasn’t the plan’.
“When we got back we started playing football again, we got one or two chances and then we got the (winning) goal.
“We always knew it was going to be a difficult game. Yeovil started very well and they’re a very aggressive team going forward. They scored a great goal and could have got one or two (more) actually.
“Then a couple of decisions went in our favour. It happened the other week and it went against us and you have to adjust and adapt. We did well enough to get back into the game and then you think ‘now we can start’.
“You have to work that nine (men) as if they are 12 and we didn’t do that. I’m not going to lie, Yeovil probably deserved something out of this game.”
The hosts took the lead in the 19th minute when a cross-shot from Olufela Olomola came back off the bar and Sam Surridge followed up to fire past Glenn Morris.
After Smith had been dismissed, Mark Randall levelled things up in the 44th minute when he sent a looping volley into the far corner before Sowunmi saw red just before the interval.
Yeovil manager Darren Way was disappointed with some of the decisions made by Huxtable in dramatic game, particularly the one to give Sowunmi a straight red card in first-half stoppage time.
“I don’t think the referee had to send both players off,” Way said.
“I don’t like saying that but overall it was very disappointing in the decision making from the referee – but if there is any justice to be done I think at least one of them which is Omar’s from watching it on a replay was never a sending off.
“We were playing some very good football. We were certainly the better team, but unfortunately we then got Connor sent off and it changed the game. They then scored from a set play and then Omar goes and gets sent off.
“Crawley regrouped [when the game was stopped]. They were in their dressing room for 10 minutes. The referee has decided to make that decision and again, you feel that if it couldn’t get any worse, a drone some clown decides to drive into the stadium, so a big well done to him, whoever he is. But listen, I can’t use that as an excuse.”
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