Probably Mark Karpeles or someone close to him controls all the coins. Since now the wallet is tagged (and probably blocked by all the major exchanges), he can't exchange them for fiat via BTC-E or Bitstamp. So the only option left is now to invest them.

He or his accomplishes are actually trying to cut the trail. So they are investing in an altcoin, then they'll sale those alts in some coin only exchange against BTC and those will be fresh BTC for them with no string attached. The sheep-market money launderer also tried something like this...

Probably Mark Karpeles or someone close to him controls all the coins. Since now the wallet is tagged (and probably blocked by all the major exchanges), he can't exchange them for fiat via BTC-E or Bitstamp. So the only option left is now to invest them.

They can just launder those coins in the altcoin market. It is possible that they were stolen from him by someone close to him (if he really doesn't own them).

Probably Mark Karpeles or someone close to him controls all the coins. Since now the wallet is tagged (and probably blocked by all the major exchanges), he can't exchange them for fiat via BTC-E or Bitstamp. So the only option left is now to invest them.

Developers, stuck without direct access to the Mt. Gox source code, resorted to playing video games, people inside the company at the time say. Employees were also concerned that Karpeles' tight grip on all company affairs was causing a bottleneck: he was the only person who could access the exchange's bank accounts and bitcoin holdings and resolve requests by traders to cash out. Former employees say they asked Karpeles to share the passwords to Mt. Gox's bitcoin wallets in case he became incapacitated or unable to access the data. He refused, leaving him as the only person able to piece together the passwords, written on paper stored at his home, the office, and an undisclosed location.

They can just launder those coins in the altcoin market. It is possible that they were stolen from him by someone close to him (if he really doesn't own them).

So yes people like these effect bitcoin? There are always people who want to gain from innovations like bitcoin . That happens when bitcoin is not really coherent with any laws. We say bitcoin is freedom but corruption Is also mtgox is great example..

Probably Mark Karpeles or someone close to him controls all the coins. Since now the wallet is tagged (and probably blocked by all the major exchanges), he can't exchange them for fiat via BTC-E or Bitstamp. So the only option left is now to invest them.