It will not be practical to disable the embedded jQuery - Tersus dependence on jQuery will only grow over time.
I guess it will be more practical for you to make your scripts run with the more recent version.
Alternatively, you may be able to run the older jQuery version in a dedicated namespace - possibly something like the code below. The cost is that 2 copies of jQuery will be downloaded and parsed.
//both $ and jQuery will initially be undefined inside the function
// All your jQuery stuff - both old version of jQuery and your functions that use it
neohair.f1 = function()
//Something you want to call from outside
For best results, use the Firefox browser..