Biden said this on February 7th. On the 22nd the German Chancellor suspended it's certification.
There's no reason to sabatoge the pipeline when a year before it was Biden who waived sanctions on it. What changed both country's stance was the invasion. Germany became fully onboard with shutting it down after the Ukraine invasion.
Only Russia has anything to gain from such destruction (if it proves to be sabatoge) at this point by keeping the pressure on Europe's energy situation.
The pipeline was never in use, but it was filled with 300 million cubic metres of gas, which presumably could have been pumped out and used to at least some degree, even if more gas was not being pumped into the pipeline.
>According to the Swedish National Seismology Centre measurement stations in Sweden and Denmark had registered powerful subsea blasts in the areas of the Nord Stream gas leaks on Monday
normal pressure at the depth of the pipeline = ruptured
https://www.reuters.com/business/energy/nord-stream-ag-opera...
looks like someone finally blew them up