Magath's resignation was accepted by the Bundesliga side today, just 48 hours before they face Fortuna Dusseldorf in the Bundesliga and five days after a 2-0 defeat at home to Freiburg - a fourth consecutive defeat.
"The timing is surprising," said Strunz on Liga Total television. "However, the outcome is not. After considering all of the factors, this is an understandable decision."
Strunz was also critical of Magath's work in his second spell at the club.
Having led them to their one and only Bundesliga title in 2009, a lot was expected of Magath when he returned after leaving Schalke, whom he had led to second.
However, despite heavy investment in new players and a revolution of the playing staff, the club find themselves in a worse situation than when Magath arrived in March 2011.
"It is incredible how much money has been invested, and all they have got to show for it is a place at the bottom of the table," added Strunz.
"70million euros (£56.25m) have been spent on 27 new players over the past 18 months. That is incredible and you just have to shake your head.
"13 of these players are not even there anymore and of the other 14, none have really made a name for themselves."
Magath left Wolfsburg's training ground without comment today, but he took to Facebook to say that he is only stepping out of the limelight, but will continue to be a presence in German football.
"You have always been a stimulating, complimentary and also critical community," he wrote in an address to his fans.
"I am very grateful for your support and backing. There will certainly not be a lack of exciting issues because that is what life in football is all about.
"I will remain in contact with you."
Magath's contact to Dr Francisco Garcia Sanz will also remain strong, with the Wolfsburg chairman insisting it was Magath's decision to leave.
"He reacted as a professional when such an analysis is made," he told Sport1.de. "I repeat once again, we did not fire Mr Magath."
Appointing Magath for a second term was Dr Garcia Sanz's decision and perhaps one he will live to regret.
"I don't know," he said. "We are always cleverer in hindsight. It is too early to talk about that."
Dr Garcia Sanz will now consider what the best option will be for the club's future, having chosen a popular one among the fans by appointing Lorenz-Gunther Kostner as caretaker coach.
Only time will tell whether Kostner will get to keep the job on a permanent basis, having already deputised for four months at the end of the 2009/10 campaign before Steve McClaren was appointed, but he can stake a claim for the job with only the second win of the campaign at Dusseldorf on Saturday.