Help: Phone Flips Itself

[STANirvanaIND]

Sorry if this has been asked before but I couldn't find it in a thread already (although I really didn't know what to search), anyway, I have the newest version of Mightyrom War and sometimes when I turn the screen back on or someone calls me the screen starts horizontal and then has to flip itself...which normally wouldn't bother me but when someone calls me the phone has to flip itself and sometimes I miss the call then.

I figured it may be because the keyboard was sliding out a little in my pocket, but I looked and it would have to open pretty far to do this. So anybody have any ideas on what to do?