Agree, Think most fans were puzzled at the time as well.
Antti Vuolas situation is similar to Keynan Rew's when he first came to the UK, Ipswich had to be patient and wait a year to get any return on the investment.
Antti Vuolas will get better with more experience, Just a case of whether Birmingham are willing to be patient and if they're not then like you've just said, They shouldn't have signed him in the first place.