Sorry, can't recall the spec of your car, but when you say manual in 2nd are you driving a manual gearbox or did you manually select the DSG for 2nd?

Mine is a DSG and there was one occasion recently when I selected 2nd gear and the engine spun as though it was neutral. It could have been stuck in 1st, but I couldn't tell whether it was stuck in 1st or neutral as I was going down a very steep hill (the big epping road dipper at lane cove intersection with Mowbray road).

There was only one prior instance where the DSG was in "D" and the engine spun as if it was in neutral even though it just changed from D3 to D4.

It's a very rare occurrence, so I haven't reported it as a problem, but it may be related to a faulty heat sensor that prompted the DSG recall in the US.