A third option ... WGT chose flash to be a basis for it's game and it's extremely sensitive to many things. Site speed, internet speed, site traffic, internet traffic overall, your computer, their overloaded game servers .... etc. etc. etc. ....
I often find that after I've made an eagle, I often make a bogey on the next hole, followed by a birdie on the next. I chalk it down as WGT's sense of humor ...
Apex will be in here shortly posting his link about optimizing your system ...