So this time, I was trying to encounter Duna. Of course, to approach my maneuver node fast, open up my map and do the "warp here" thing. While it was warping, I accidentally toned down the warp. Now, I can't even frigging open up the menu, interact with the UI, or anything! Even if it's back to x1! The only things I can do are throttle my engines and open the the map. What can I do? I don't want to ruin my entire career!
Windows, downloaded from Steam, don't know whether 32 or 64 bit.
EDIT: Scratch that, I accidentally went back to KSC and can't revert flight anymore. fml. I'd still appreciate answers so I know what to do what I accidentally do the thing in the future.