Not odd at all if you believe, like I do, that TDS had second thoughts about dealing with US regulations and regulators and the level of transparency expected by US stockholders.
I think the tax issue was a red herring, and TDS was really saying "upon further review, we really don't want to be public under your rules".
The annual report due date was a "shit or get off the pot" moment for TDS, and they elected to get off the pot.
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