LB2120 Feature request: Send an SMS message to the device to manually switch over to cellular

I have the device setup in bridge mode and it alerted me to a switchover from wireline to LTE and then it went back based on the keepalive but my router shows that it never actually made it back to wireless.   I have DDNS setup on my router and the dyndns logs show that it switched to the ip of LTE but never back.   Now I'm stuck with no remote connecitivity to it.   It would be great if I could send the device an SMS message to force it back to LTE.