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Drouet was left with a broken nose after being allegedly attacked by John Tomic in a late-night brawl in Madrid on May.
Tomic senior is now facing a criminal trial to be held in the Spanish capital in October.
Drouet has since severed his links with John Tomic who has also been banned from all tournaments, including Wimbledon where the Frenchman has helped steer Marion Bartoli into the singles semi-finals.
"John Tomic is a mad, evil manipulator," the 30-year-old Drouet said.
Finding himself without a job, Drouet pitched up at the French Open in May and approached Walter Bartoli, the father and long-time coach of the French number one who will face Belgium's Kirsten Flipkens in Thursday's semi-finals.
"I called him and the same evening, Marion sent me a message and the day after that, we started working together.
"I was happy to have found some normal people. It was a big change for me," said Drouet.
With Walter Bartoli not at Wimbledon, Drouet has found himself with a major role to play with the 15th seed along with France's 2006 Wimbledon champion and former world number one, Amelie Mauresmo.
"We have known each other since we were children, that makes it easier. But from the start, I have been more than just a hitting partner.
"They wanted something else, an outside opinion."
Despite his absence from London, Drouet insists that Bartoli senior is happy with his daughter's progress as she sets her sights on a second Wimbledon final following her runner-up finish to Venus Williams in 2007.
"I don't give her orders, I am not her boss. We talk a lot. She's a very intelligent girl and very human.
"We take the job seriously but when we are finished, we go to the restaurant and kid around," added Drouet.
It's a different atmosphere from his days with the Tomic camp where he described his role as a "stooge".
Bartoli said earlier in the tournament that the split with her father had been amicable.
"At 28, it was time to try something different. We both felt the same way, which is great," she said.
"I still have a very good relationship with my dad, and I'm very happy every time I can see him.
"Obviously it's my first Wimbledon without him, but I'm still calling him every day.
"So there is not really anything broken between the two of us."
