Sell on Thursday, buy on Sunday didn't seem to work this weekend.
Though it didn't make huge gains, 2 or 3% over 72 hours is not the worst that could happen to someone:
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http://bitcoincharts.com/charts/mtgoxUSD#rg5zczsg2011-07-14zeg2011-07-17ztgSzm1g10zm2g25Prices on Monday are lower than on Sunday.
With Mt. Gox temporarily unable to accept SEPA until Tuesday (at best), I might have been a little less antsy to buy back.
Full disclosure: I did no selling or buying over the past week.