Pod2g Explains Why A5 Jailbreak Is Not Possible At The Moment

In one of my recent post i announced that pod2g will be releasing the iPhone 4S and iPad 2 jailbreak withing a couple days, however Pod2g posted on his blog today explaining why the A5 jailbreak is not possible at this moment.
This is what he wrote:
" How could pod2g have an untethered 4S and dev teams still haven't released tools to achieve this at home ?
The exploit I used to inject the untethering files to the 4S relies on having a developer account, and can't be released publicly.
It's the same reason why @MuscleNerd has an iPad 2 tethered jailbreak but couldn't distribute it. 
So, we need to find a distributable exploit to remount the system partition read/write and to set Corona files at the correct places.  
Why A4 version of Corona was easier to release ?
Because a tethered jailbreak is a good way to install Corona!
Why don't you do a tethered jailbreak then ?
A tethered jailbreak also relies on an exploitable vulnerability that we still haven't found yet ! "