Tough question. Wieters is bound to pick it up at some point. He had the same hype as Posey, and perhaps more, at one point.
Glaus is a ticking time bomb in my eyes. Although, why not ride the hot bat. You have no UTIL spot? If not, you'd have to take out Reynolds, who is pretty much what you expected, I'm sure. His average can't go any lower.
So, I'd drop one of your catchers and ride Glaus/Reynolds, whoever is on a hot streak. May as well dump Wieters for now while Posey is hot.