Can God's plans for Toomey be changed by prayer?
By the people who are actually praying? Without a doubt. They would be more motivated to make a difference. As for what the turnout of this is, you'll have to ask God yourself.
Of course they can, one way or another. Jesus prayed to "let this cup pass from me" but ultimately "your will be done", and that is how we pray as well.
Or are you just deriding Christianity?
The official answer is "Yes and No."
If you're into Quantum Physics, that answer should work for you.
Shalom.
I'll regard that as a sincere, rather than cynical question. The answer is yes. If you studied Scripture, you'd be familiar with the person of Hezekiah, King of Israel. It was God's stated will that the king die at a prescribed time. That was announced to him. He prayed that his life be extended (even though it might be contrary to God's will). God acquiesced. The consequences to that life extension were regrettable -- the birth of the vile king, Manasseh (the king who sawed Isaiah to death). Hence, prayer can change events to conform or go contrary to God's will. Hence, we add "Thy will be done."