Yes, the priest can baptize them if they are near death. [b:33rikqvv]I[/b:33rikqvv] could baptize someone if they were near death.
Also, as to the prudence thing… I am speaking with mostly Catholics here, but alos even with Protestants, you have to make sure they know the truth, no matter what it is.
Finally, your last question, if they did NOT intend to enter the Church. NO, you cannot. Just as Peter says in his epistle, it would be better to NOT have known the truth than to know it and fall away, if protestants KNOW that the Catholic Church is the one holy catholic apostolic Church, it is a grave sin for them to remain OUTSIDE of it.
And really, I don’t understand how one can a) not believe in the Church but believe in the Real Presence or b) argue that someone who DID hold those views should be admitted to Communion.