I would get them dried ASAP and store them as described. The reason behind dehydrating is that you are pulling
all liquid and moisture out of the food, therefore preserving the food. If there is still moisture left in the food then the shelf life of that product will be shorter than if completely dried. So if your pods have been dried recently, i.e. in the past couple of weeks, then I would say re-dry them.
While cleaning my Magic Bullet, all I do is rise it out in the sink, remove the rubber 'O' ring and then place the cup part and the blade cap in the dishwasher. I place the blades facing down and both are on the top rack. When done washing, they both go in the dis strainer until completely dry. I've had no problems doing this and this is how I have washed it since I got it a year ago. I even believe that on the TV infomercial, they say it is dishwasher safe.
Food that is dehydrated is too dry to grow botulism, unless it becomes damp. Also botulism grows in an oxygen free environment such as canning.
I have a couple of questions for you...
You said that your pods where completely dry after dehydrating and then they got soft. How many pods are you referring to? What was your drying temps and for how long did you dry your pods. Also, how much powder has caked up?
I am pretty O.C.D. (anal) when it comes to food and food safety. My golden rule has always been: When in doubt, throw it out. This drives my wife crazy cause she uses a more common sense approach, If it's bad throw it out. And there are differences, trust me.
Sorry for rambling and hopefully others will chime in.