If it cannot be grasped with tweezers you could use a little bit of krazy glue on the end of another jack and stick it to the one in the earphone jack being careful not to use to much and have glue stick to the plastic and you should be able to pull it out .
From my experience with macbook's with water damage , anytime the keyboard membrane has become wet it has been near impossible to fix the keyboard and usually resulted in having to replace the keyboard trackpad assembly. If you only used 99% isopropyl just give it a few days to see if it will evaporate from the keyboard membrane as it gets sealed in and can take some time to go away and is probably causing a short.
Sounds like there is pressure which is pushing up on the digitizer which can happen from the digitizer cable not being properly positioned or folded wrong . Could also just be cheap adhesive strips . Easiest way to solve this would be to use a liquid adhesive in the troublesome areas. Look for E7000 Glue on ebay . Once dry it acts like a strong and flexible adhesive that can be removed with heat in the future.
You could try entering recovery mode Press and hold Volume up, Home and Power buttons until the Samsung logo appears on the screen. Scroll to wipe data/factory reset by pressing the Volume down button. Scroll to Yes -- delete all user data by pressing the Volume down button. The phone will now reboot to the initial setup screen. Also try connecting to a computer to see if it is recognized , If nothing then your phone may have experienced some sort of a short overnight and may be damaged internally . If this is the case then i would suggested bringing it to a local repair shop for a diagnosis.
It will either be a connector issue or a faulty screen. Try cleaning the connections with 99% isopropyl and a fine brush and re-seating the connectors after they have dried . Please make sure the battery is disconnected when working on your phone .
If you are not getting any sort of picture through VGA or HDMI even after trying the function keys to switch displays you may have to swap your hard drive into another computer and solve the issue this way whether it being driver related or corrupt refresh.