The three points the writer brings up are all speculation.
For Florida/Arizona, the punishment of less delegates has already been enforced. The rule was if you were WTA, you couldnt schedule before a certain date. But the punishment for breaking the rule is to lose delegates, not to force the states into proportional delegates.
For Washington, if Santorum and Paul work together, it may raise Santorum’s numbers, but wont really affect Romney’s (on a side note, where are the Santorum people complaining about trying to change delegates they way everyone was complaining about Paul in Mn/Mo/Me)
For the unbound, what makes the writer think a majority will go to Santorum? They might, but it is all speculation on that. The same way as counting Ia, Mn, Mo delegates was speculation early on.
The whole thing is just wishful thinking. In addition to the points you make, the article claims Texas is going "winner take all". Texas is almost certainly NOT going "winner take all". The Santorum campaign is pushing for such a change, but the odds of that actually happening are next to none and none.
I know I heard Rove say those states were not proportional. It's stupid to get worked up about this anyway. Only a fool goes to the casino thinking he has just as much chance to win as the house.
This campaign has been an eye opener, though. I now see FOX as just another propaganda machine. They complain about the left wing media distorting and taking things out of context, and they do exactly the same thing.