The answer to that question is going to be exactly the same as it is for Debian: No. If the packages installed are higher versions than those in the repos, apt does nothing.
There is no easy way of downgrading a system, the packaging tools were simply not designed for it.
The is various chicanery one can play with apt pinning to force lower versions to be installed, but there are usually conflicts, and it's always a pain in the ass.
99% of the time, I'd say a reinstall is less hassle.
Or better yet, just make a backup / snapshot before trying out the new stuff.