Anyone can un-delegate SP at any time. We have no control over the SP that is delegated to the bots here at MSP. It just adds to their voting weight.
I just checked, and show that you delegated 2 SP to us. You can simply go back and do the same procedure again, this time changing the amount to 0.000000. It will remove the delegation automatically from us, and return to your wallet after 7 days.
RE: Minnowsupport group scamming : all one take care about this guys ( don't delegate your steem power to this group ) dont thieves take u steem power