[frittob]

The key here is OP said it's not connecting at all ... without the device, uninstalling/configuring Activesync isn't going to matter.

For the record I had this exact same thing happen on two different TP2's ...
... One just stopped connecting after over a year of use, I guess the USB port eventually deteriorates
... Other was brand new phone that never connected to a PC before, I guess there were some bad batches out

Had TEP on both, both replaced @ Sprint store without any problems.