How are you unbinding the oxycodone from the extremely long chain polymer material that it is encapsulated in on a microscopic level? How do you know you're defeating the time release? Your method doesn't replicate the natural ingestion it was designed for (the acidic levels in the stomach and then the pH buffering and more alkaline intestinal tract? I'm just trying to objective here, I definitely have used similar techniques to extreme success with other time release mechanisms but it never truly dissolves when I use the method I would have used on Morphine Extended Release 100mg etc, the OP mechanism always leaves some viscocity unlike how the old school wax matrix versions of Extended Release narcotics always seemed to have the insoluble particulates fall to the bottom of the container they're "incubating" in, I've never seen any visible signs of actually defeating the time mechanism like this with the OP's...
Just my $0.02, not saying you're wrong but I don't think you're completely defeating the time release, at least not technically or in a way that can easily be quantified.