I dont know where you got information but I am 100% sure it is possible to withdraw money from ps.com and have it credited in USD or EUR in a vietnamese bank account, I have successfully done both before. You just need to have receiving accounts in USD or EUR which are very easy to open in international banks. Oh, and obviously you need to send USD from ur online account if you want to receive USD in ur bank!! Thats very easy to switch between EUR and USD from the pokerstars software.
You should not care too much about the euro crisis, the risk is already included into the exchange rate. Long term it is definitely safer to keep EUR or USD rather than to keep VND.
To me its pretty obvious your main problem is banking with a ****ty viet bank, just close your account there and open an account into a major international bank. I bank with ANZ but HSBC will perfectly do too.
When I opened my account 2 years ago I first deposited a little cash at the opening and then I wired online poker money. I had quite a bit of troubles at first because my bank officer did not understand much of anything (and once she screwed up big time). At some point when I had over 50k$ equivalent in my accounts I got upgraded to a so-called VIP level and switched to a much more competent bank officer (who by the way is in her late 20's, kind of hot, very funny, and single
once she even asked me if had nice friends for her to meet!). Once I got here to take care of my accounts I never had any problems.
Ive asked a couple of times and it is my understanding that its impossible to wire money from a Vietnamese bank to a pokersite just because the pokersite is a company and not a personal account. And by vietnamese law it is forbidden to send money to a foreign company unless you have an invoice (and even then you would have to fill lots of forms) wich obviously a pokersite cannot provide. Thats the same problem I had when I went to Macau, I could not wire money directly to the casino because, once again, thats not a personnal account.
Depositing small amounts with a large vig is easy though, you just need a credit card! But obviously the amount you can deposit is very limited and you dont want to pay that kind of 5%+ fees.