Hello,
There is no need to take apart the freezer panels if you have located the the drain and have flushed it out. If you were seeing water coming out of the tube and emptying into the defrost pan then your line is clear. Once this is clear, you shouldn't have any more water buildup inside the fridge. Wait to see what happens. There is no need to defrost your fridge. Hope this helps.
JP, March 2006