Thanks everyone. I now see my cause for concern... Official layover time has been reduced to 27 minutes. Coming in on a A320 so should not be too much of a schlep to outbound to AMS.
You should be able to get a change to an earlier flight for free as 27 minutes is under the MTC for Domestic to International at SLC. The minimum connection time is 30 minutes.
Minimum Connect Times
STANDARD.D/D...D/I...I/D...I/I.
ONLINE .40 1.00 1.00 1.00
OFFLINE .40 1.00 1.00 1.00
** OR * ARE ALL
DL-DL DI .40 CANADA - ALL
DL-DL DI .30