very high eCPM means low traffic. high traffic site would not have that such high eCPM, but high earning.
high CTR will give you a HIGH CPM...obviously.. ive seen ECM's of like $600 in the past...but once you get to 1000 PV it cuts down...
i afraid that its the hint that your account is going to be disabled! that looks impossible in normal situations!
That is not true. It is possible with low traffic and high paying keywords. I don't think you have anything to worry about, if you are sure you have done nothing wrong. As many have said here, a high CPM is nothing out of the ordinary, especially for low traffic pages.
Please don't make wild, unfounded speculations. I've had eCPMs that were 10 times higher than that without problems.
It may go down as clicks and impression go up. Also, check what part of the month you are in as they vary from day to day.