I do live alone. I'm positive that it was not a spill
I should have clarified what I meant by serious leak. There was at least 15-20 litres that poured through to the parking garage beneath my suite. Also my floating floor was literally floating on water in my bedroom. There is no way that it was a spill.
I really just want confirmation that it is possible that drain pipes can leak and stop leaking all by themselves without proper repair. If anyone knows of this happening and can recommend a way to find a leak that is not leaking consistently that would be great. My belief is that the pressure in the drain was particularly high that day, possibly due to the augering and since has not been under the same pressure.