I feel like someone has to defend MindArk, at least a little here. At a minimum try and see things from their point of view.
I'm not an attorney, but there's a major legal issue here. From what I understand, only Governments are legally allowed take property from an unwilling person - 'Self Help' is not a general right. If something has been stolen (or taken through fraud) from you, you are supposed to have the government take action. Legal issues get even more complicated since people are interacting with individuals in other countries.
MindArk is not a government. Items in EU have an actual real world value. MindArk, nor it's employees, are qualified to judge who should have possession of an asset. While it's probably not worth your time, or legal expenses, you do have a right to sue in a real world court. In either the ToU or the EULA, in the privacy clause MA states that any information they have will be given concerning relevant parties if legal action is taken. When people ask MindArk to get involved in a Fraud situation you are asking them to do something they (arguably) do not have a legal right to do.
In the fraud situation involving the FAP the Planet Calypso spokesman made it clear that because they item was TT'd they were able to recreate it and give it back to the victim. If you think about it, they did not say there was any action taken against the con-man! They created a new item (with the same stats) and gave it to the victim. In a very real sense it cost MA (or PlanetCalypso) the TT value of the item. That simple action got plenty of good will for very little cost.
With the whole Deed situation MA *took* the deed from a players inventory. This upset many players - it sounds like it upset some well known players enough to quit the game. It was seen as an example representing MA being able to take anything from any player at their sole discretion. Honestly, I wouldn't be surprised if that player has grounds to sue MA, in the real world. The player gave bargained for value to a third party in exchange for the property, and MA took the property without permission or compensation. (There are multiple types / definitions of property rights - And no, the EULA / TOS are not guaranteed to be perfect protection in legal situations.)
In the end, MA being a neutral party makes a lot of sense. Anything else and they are asking to get into trouble.