Doubtful. I think the most rational reason Russia might have done it was to remove a bargaining chip from any Russian challengers to Putin. But this seems like a stretch; if Putin thought some gazprom executive was going to use the pipeline to negotiate a peace with Europe, he'd probably just order that executive and his family murdered. That seems to be the way he operates.

Self-sabotage to preempt coups is not unheard of though. The organizational dysfunction and poorly trained state of several militaries around the world is probably attributable in part to self-sabotage, by politicians who fear military coups.