So basically:
1. John Pierpoint (JP) Morgan is getting involved with the creation of The Federal Reserve Bank.
2. High profile opponents getting on Titanic's board to go protest against the FED creation.
3. JP Morgan owning the White Star company then calls Titanic's captain to make pressure on him to go full speed in a high risk iceberg zone.
4. Crossed finger.
Seems very plausible IMO. If I were JP Morgan, I would have done the exact same thing. I don't think that was completely planned in advance but more like a "right on time" opportunity to get rid of your opponents. JP Morgan would have been stupid to not take that opportunity considering that these people have no moral at all.
Do you have any sources to backup #2?
I personally think it would be highly unlikely this would prove to be true. There were not advanced navigation system available back then so it would be very unlikely they would even know where iceburgs would be to potentially be able to run into one.