One slight problem however, AMD already patented a locking brace for the original AM4 socket, and they abandoned it for the final version.
The reason? well, if you think about it, the IHS on the package doesn't have any lips on it, does it?
... you're effectively attempting to separate the IHS from the package in the most destructive way possible...
Just tug the heatsink/block straight up. The socket doesn't "hold" the CPU down in a way you might be thinking, all the latch does is put sheering pressure on the pins to create contact, sliding the pins out is a non-issue. In fact it's not really any different to any other common pin plug, the only reason the lever exists is to allow for easy insertion without accidentally skewing the CPU on the socket. You can still force it back in however if you really wanted to, didn't harm my AM3+ at all doing that.