Know the feeling mate.
My SK2 has just done the same for the second time with only 2k miles since new crank fitted.
Found out off web that Suzuki America did a recall in 2000 for problems with oil pump sucking in air on twisty roads.
No warnings, oil light off, oil level ok just locked up solid at 50mph on a left hander. Took a few mins to pull my undies back out after that
