I started playing Vendetta a few days ago, and saw that it supports mouse/keyboard options for android, so I thought, "cool, I have a OTG cable, let's do this" ,I plugged in my dell keyboard and my mouse and everything works fine, until I open the app, at that point, if I touch any of the keys on my board, it acts like I'm holding down the left arrow, but I'm not.
It acts like I'm just continously scrolling through the menu at breakneck speeds.

Has this happened to anybody else? Do you play with a keyboard/mouse?
I can use said setup for surfing the web, and typing on Facebook and stuff, it's just when I enter a game that it does this.

I don't know what could be causing your keyboard problems (some people use keyboards without issue), but you should be aware that Android treats the mouse like an emulated touch on the screen, thus it is useless for flight, since it stops polling mouse movement at the edge of the screen.

I've actually never used a USB keyboard, but I do know some Bluetooth keyboards exhibit this problem if it is not selected as an input device in Androids input options. Sometimes you will need to install an app called "external keyboard helper" to set an external keyboard as the default input method. It is not a free app, but there is a demo to see if it will support your keyboard.

Don't know if this works with USB though, like I have said, all the keyboards I have used with VO have been Bluetooth, and most of them work without an issue. Might be worth installing the demo to see if that helps though.

I have a similar problem using a Bluetooth keyboard.
If you hit any arrow keys with the pda open it continously enters arrow command even on the screen to quit after you log out.
Another member of my guild has complained of the same problem.