Yes, you can get out of it. It is really not enforceable!Good God, you had to sign this when she was in Xcel? That was tip #1 that disaster was headed your way ...I've been in the sport for almost 20 years and had 2 multi year level 10s and never signed any contract, ever. Nor would I have signed one....for a leisure activity...I'm not taking out a mortgage, my kid was doing a sport, period.
Given what you've said has been going on with all the bullying and the coaches basically throwing their hands up saying they know about the bad behavior (and if you have anything such as an email to that effect, keep it) , they have created a hostile environment which I would think negates the contract , but I'm no lawyer. If even bringing up a lawyer doesn't get you out of it, see if you can get a letter from her pediatrician stating that the hostile environment is having a detrimental effect on her mental health and she can't continue there.
And if none of that works, call and email them EVERY SINGLE DAY about the bad behaviors and make the powers that be miserable enough that they toss you...save every written response you get back and hopefully build your case to leave.