IFA Trade Management - Releasing a Vertical Spread in an Iron Fly

Most of the IFA strategy was flushed out in this post.  Recently though some trades like KRE, SMH, and IYR have tested their top long call as the market has continued to rally, which can be expected.  When we buy that call typically IVR is high, and the strikes widen, and now that one side has been tested, I want to look at trade management as potentially one side of the trade is collected virtually all of its value.  When one side of the trade has lost 85% of its value, I want to close out the untested side, and then remain short a vertical spread if enough time is left in the trade.