Bill-
As a new player I think you're confused at the scores you're seeing. I believe the 58, you mentioned above, is for a round of "stroke play". The score of 250,000 is most likely from a "blitz" game and that score can be easy to get if a player has played that course/game many times and has all the shots dialed in. You get a boatload of points for hitting the flag stick and about 100,000 for putting it in hole.
If you play a blitz game on a particular course and get to know all the shots you too will be able to hit the 250,000 mark.
Without seeing the player profile you're referring to, I see no signs of sandbagging from what you have written.
MC