Platinum Point is the issue. Wagtail GC also is an issue but it drags your handicap down, instead of up. I recommend remembering the picture of the course and next time it tries to send you to those courses, just back out before the 15 second timer runs out. Tanking on a really high round to fix it probably isn't the best option. I recommend just playing normally and do 9 hole rounds until it flushes it out of your handicap record. Since the handicap record only holds your last 20 events on courses that have over 300 plays and are rated. If you play a lot, it should fix in two or three days.