Wellllll...NO.
It might work differently on the SKYW side of the house. Although the ASA version does allow you to 'change' the % (and therefore, cancel contributions) at any time, the changes will only take affect at the purchase time, either 1 Jan or 1 July. So even though you can request the change through 'Computershare' (something tells me this was the lowest cost provider of this service...) at any time, the change will not be made until the end of the 6 month period.
The changes will not touch any amount purchased during the 1 July 08/1 Jan 09 time frame. However, the 1 Jan 09/1 July 09 time frame will now be limited to only a 5% discount from the closing share price at the end of the period.
The value to the ASA/SKYW employee has been dramatically reduced.
I think the plans are the same. I just changed and decided not to participate for the next 6 month period. THere also was an option to cancel out of this 6 months and get the money back. Don't know why anyone would do that begining price was around $10.75 (after the 15%). It was a great program, not many companies out there offering over 5%.