微妙な空気って英語でなんて言うの？

"While the employees were all banding together to reform the company, his uncooperative attitude made the atmosphere at the office uncomfortable."

In the sutiation that all workers put their effort on reforming the company, he made unconfortable atmosphere because he was not willing to cooperate with it. unconfortable atmosphereはかしこまった言い方、 カジュアルに言いたければ、 wired feeling wired sutiaton などもあります！ どういう状況でいうかによって変えてください！