I hadn't heard those rumors, but I think the Poles have put a giant stake in the ground with Putin by expelling 45 diplomats and blocking the embassy bank accounts. They have delivered a huge FU in the clear knowledge that they are a member of Nato and any direct action by him will bring a direct response from Nato. I doubt they are making these decisions in isolation. I would also doubt there is much appetite in Russia for a military confrontation with Nato given they are having their asses handed to them in the Ukraine (relatively speaking).
As I've said before, as calculations go, by Putin, he has f-d up beyond all recognition. He has done more to unify and reenergize Nato than anything or anyone in decades and he has the EU moving towards a unified defense strategy, the freaking EU!!!
Reading tea leaves here, but seems to me that events on the ground have plainly gotten away from Putin, and both in dollars and lives I'd say Russia isn't moving in the troops to control the territory he's claiming. So this has moved to the endgame of what Russia gets to go away.
As someone who thinks we need to stick it to Putin, I think Biden's slow cautious approach is actually pretty smart. As long as Putin remains the only 'bad' actor, the European public will be more accepting of the higher gas prices that are required to break their addiction to the russian fuel. Same here in America, sticking it to Putin is going to require the public not to totally freak out at higher energy prices. Which to me, with gas at $6 a gallon, is still better than letting our egos talk us into another war.