Cleaning the keyboard of this computer would required the Lid to be open.
Apple computers like this one, even if it were Turned OFF before the Lid was Closed, would automatically Turn ON
Therefore, during the time the keyboard was being Gently Cleaned, some key or combination of keys were depressed which has led to this issue
It haas been suggested to contact Apple Support for additional help
Understand, there are User to User Forums and Not Apple Support itself
We are each working Remotely from some location somewhere on the earth
If that this seems unreasonable, sorry about this.
We have attempted to assist as best we can
The next best thing to do >>
Have the computer evaluated by the Professionals who have the Special Hardware Software and Expertise to diagnose the issue and offer possible solutions
Make an Appointment at the Apple Genius Bar or call 1 800 MyApple and have them evaluate the computer