The Brad Jones Racing driver lost control of the Commodore heading over Skyline before finding the wall on the right-hand side of the Esses.
The car then ricocheted across the road to make contact with the left-hand side on approach to the Dipper.
“Hopefully there is nothing structural, we will get it back here as quickly as we can and have a look at it,” said team boss Brad Jones.
“I doubt it will be going again for a little while hopefully, we will have it sorted by the co-drivers session, it will really depend on what it has done to the bar work inside the car.”
The crash brought out the red flags for a brief period halfway through the 60 minute session.
Slade emerged from the crash unscathed.
“I am all good,” said Slade.
“We just made a change to the front, we went out, the car was awesome, it was sort of really comfortable, but I just lost the rear and couldn't collect it.
“I collected the fence pretty hard, I am not sure what the extent of the damage is, I guess the guys will have a look at it and go from there.
“Obviously pretty shattering, especially considering how much work the team has done this year with damaged.”
The session was halted with 19 minute remaining when Lucas Dumbrell Motorsport's Alex Rullo hit the wall at Forrest's Elbow.