According to his friend Crusader Hillis, Dimopoulos feared he was the victim of an "anti-gay home invasion" and fled the scene, only for police to catch him and break his arm.
"[Police] just stormed into a dark room shining torches and it was impossible to identify them as police," Hillis wrote in a lengthy Facebook post, adding that the officers did not identify themselves.
"At no time did the police when they were chasing him say ‘stop, police’ as you would expect."
The botched raid was in relation to a local carjacking, and police had entered the wrong address.
Now, his friend faces "the likelihood of losing the use of his left arm, which is broken in several places from the shoulder down.
"The surgeon described the injury as 12 on a scale of 1 to 10," Hollis explained of the horrific injury.
Victoria Police Assistant Commissioner Luke Cornelius addressed the media on Monday morning, admitting he was "deeply sorry" for the actions of his police officers.
"It is clear to us that our attendance at that property was a mistake.
"[It is] very clear to us that police stuffed this one up. Very clear to us that the injuries occasioned by the individual who was arrested by police. Very clear to us that those injuries are very serious and the nature of those injuries demand explanation."
As for Mr Dimopoulos' belief that he was targeted because of his sexuality, Commissioner Cornelius insisted the botched raid was not a homophobic move.
"I am confident there is no evidence that the police attendance at the premises in the early hours of the morning on Saturday at Fitzroy was in any way associated with any sort of homophobic motivation on the part of the police concerned."