huh!! Iwas just thinking to add a forum topic that asks a similar question. But my question was: Would the sand protect him without any jatsu?
But on the other hand, the answer to your question is: he can still use the handsigns-required jutsus, since you didn't watch shippudden, i will remind of the fight between him and kimimaru, he used handsigns to perform the sand wave,right?
So now, his only loss was the auto protection provided by shukaku from sudden attacks. FINALLY FINISHED THE LECTURE :)

from what ive read in the latest manga chapters, i believe he still has an incredible amount of control over the sand but has lost the unconsous control that shukaku had given him

Gaara still has as much sand control as he did before. :)