If you vote aff, you vote for the resolution. Mandate 1 is not under the resolution, ergo, when you vote aff, you do not vote for mandate 1.
Of course, don't use this when running parametrics.
Assuming you're using parametrics to run a topical CP, you can still say X-T is bad and you should drop the aff on it.
The four I like to use are:
1) Ground. X-T explodes neg research ground, taking away predictability, clash, and education. The aff can run literally anything.
2) Abuse. The aff can claim advs or no-link DAs using X-T parts of the plan. That moots 1NC or 2NC strategy, skewing the neg out of the round.
3) Solvency. Severing out of an X-T mandate creates a terminal solvency deficit, meaning they lose after severance anyways.
4) Severance bad. The aff shifts their advocacy from the first and second speaches, mooting the 1NC and skewing the neg out of round.
5) Resolution. By having to step outside the resolution in order to access solvency or advs, they prove the res insufficient. Your ballot uphold the resolution, but when the aff affirms a different resolution you have no reason to affirm.