I wouldn't assume too much at this stage. You'd think Samurai would have been prepared for something like this. It was kinda inevitable really
Whirlpool runs on sparrow and as I understand they use it differently (blinded inputs).
Discussion
Common pool, common coordinator, which was run by samourai. Check sparrow logs when you open a whirlpool wallet, you'll see the errors connecting. But, that could just be a siezed dns, we won't know until more information is available