SBS2011 - odd behaviour - IIS / WAS crashed

Question

Hi,
This night, on a customer's SBS2011 server, WAS reported an event 5080, where was mentioned that the SBS SharePoint appPool will be recycled due to 1 or more config changes. The config file involved was corrupted (eventID 5189)
After that i see a waring (I don't know if it is related) of Kernel-Tm, eventID 1:
The Transaction (UOW={bfbaf6f6-30c3-11e3-9bd7-001e67861381}, Description='') was unable to be committed, and instead rolled back; this was due to an error message returned by CLFS while attempting to write a Prepare or Commit record for the Transaction. 
The CLFS error returned was: 0xc01a002f.
Then things went fast:
WAS 5189:
The Windows Process Activation Service failed to generate an application pool config file for application pool '*'. The error type is '0'. To resolve this issue, please ensure that the applicationhost.config file is correct and recommit the last configuration
changes made. The data field contains the error number.
and a few others that mention cannot initialize and start (5036 and 5005)
After that IIS crashes and could not be started again. Even after restoring the SharePoint App Pool's original config file from the backup
Now I read in several forums that in this cases IIS needs to be reinstalled. But his is an SBS2011, which is pretty much preconfigured by windows itself. Is there a good procedure of what I should do?
Or are there other better ways that I did not see?
And of coarse: I didn't see this happen on SBS2011 servers before.... what is this??? A possible hack?
Greetings,
Alexander

Answer 1

Later, after business hours I could do a reboot.
Fortunately, that resolved the problems :-)
Still I hope that someone knows a way to solve such issues without having tot reboot the SBS ...