Have a read here:
http://www.mk5golfgti.co.uk/forum/index.php/topic,108735.msg1053724.html#msg1053724Toe angle change is a contributing factor and stabilized with an anti lift kit (name is bit misleading, doesn't have much to do with anything lifting). The console bush is very soft and big toe angle changes happen under braking and acceleration. Controlling this will provide a better contact patch.
Is your suspension overly hard?
Shocks / springs worn?
What tyres do you have? Even sticky tyres that are cold may struggle at times.
How old is the compound?
Was the road wet or dry?
Where you demanding max power while changing steering angle?
Essentially you loose grip then recover it. Helped, once the cycle starts, by very soft engine mounts. Read the thread I linked to earlier. When traction is lost torque in the drive train is unloaded and the engine/box move back to a relaxed position on their mounts, regain traction and the re-established torque throws the engine over in the mounts again and so you have a heavy pendulum in your engine bay.
Always best to do a full set of mounts so the load is spread evenly.
I have a stage 2 car(330 bhp and similar torque) with DSG and it is fine but you have to accept that no matter how well it puts power down it will always be a fwd and never behave like a rwd.
A well set up car will behave well but you won't achieve it necessarily on the cheap depending on where your car is now.
Maybe review your driving style also?