I agree that this is an appropriate action of the Irish government. I would also say, worth it. If Mossad was behind this, I'm not one that lies on speculation, then I have to say worth it. I'll recall one staffer for one less terrorist. Israel would have used it's own passports if Israelis were allowed into Dubai. You have to work with what you have.
Israeli teen lightly wounded from stone throwing in West Bank settlement of Kiryat Arba (Haaretz)
from the article: Ireland expels Israeli embassy staffer over Dubai hit