Confession time - I suck at searching for info. Apologies if this has been dealt with before.

Today my spoiler did not deploy at speed. I manually deployed, but later it would not retract unless I held the button down until it retracted fully. The minute I let off the button, it went right back up. It stayed retracted only when I turned off the engine while holding the button down. Just prior to this I had a guy bypass the seat module so my power seats would work again.
At the same time, the radio would not shut off after the ignition was turned off.
Any ideas? Thanks in advance.