Bernard Laporte explained that it would have been impossible to work with Fabien Galthié and has changed his schedule at Toulon.
The former France coach is planning to run to become the next president of the French Federation, and has had to take time out of coaching to work on that bid.
That has coincided with a tricky start to the season, Toulon losing their opening two games in the absence of a host of World Cup stars.
Reports emerged over the weekend that Mourad Boudjellal was looking to bring in Fabien Galthié to turn things around, but Laporte has instead changed his schedule, while Toulon also picked up their first win of the campaign, away at champions Stade Français on Sunday.
Laporte is due to be replaced by Diego Dominguez in January, although he will work with the former Italy international initially before focusing on the presidency full-time after that.
"I told the players that I would change my schedule until Diego arrives, that I would organise my time differently," he told Rugbyrama.
"I will be present all the time at the club, except Tuesday afternoons where they don't need me because they have separate training for forwards and backs.
"My priority is the players and the club. That won't change, even if I have other objectives. When you feel you're in trouble you have to make a choice.
"Mourad wanted Fabien to come in on Mondays and Tuesdays, when I wasn't there because of my obligations for the candidacy. But it was too problematic. It's complicated and impossible."
While Galthié's arrival would seem to be unlikely, there may yet be changes to the coaching staff, with Laporte hoping to bring back former captain Carl Hayman, who retired at the end of the season.
"There was a question over whether (Hayman) would join the coaching staff," he added.
"As I told the president, we need to prepare for the future, with the players who made Toulon. It would be good that the day Jacques (Delmas, forwards coach) leaves, former players take over.
"But we need to prepare Carl, as I'll be preparing Diego (Dominguez). We'd also like to offer him a one-year contract, where he would only play home games. That will be up to him and he'll decide this week."