No the bladder will be fine, just repair the outer cloth and reinsert the bladder with talc on it.
The outer, cloth/Dacron cover takes all the load, just like a tyre with a tube in it.
On the subject of torn kites, I repaired a school CB3 7M yesterday, that split from trailing edge to LE, between the first and second struts.
I used that Kitefix stuff we have started stocking, after getting some practice on smaller rips.
www.kitepower.com.au/collections/kitesurfing/SPGeneralBottom line is, that the kite is ready for use today, total cost $44, and it will be hardly visible in the sky. It is so easy to do, and fast. If I was not so budy in the shop I could have done the whole repair in approx 1.5hr, and witha little extre glue drying time could have been back on the water in 3hrs, every traveller should have some.
And anyone that can adapt to having a glue repair, instead of a sewn repair, should have some too, I think it will be the way we all fix our kites within a short time.
Will post some before and after pics soon. In the meantime check out the video on their website.
www.kitefix.com/Cya and
Goodwinds
Steve