Rate lock with 2 lender s

Read your rate lock agreement and application fine print with the lender. I think consumer protection is pretty high and a bank will not sue you despite somewhat unethical behavior on your part.

When the Fed hikes interest rates, it does not necessarily mean that mortgage rates will go up.
Mortgage rates are tied to the yield on the ten year treasury note.

I doubt if you will be sued.

Rate locks are a one way option that costs whatever you paid for it. If rates move favorably, tell the lender to meet it or move on unless the lock fee/committed financing does not make it worthwhile.

you're kidding, a mortgage banker is threatening to sue? not going to get a referral it seems ... poor practice

Is the person who is threatening you the owner of the lending institution? If not, chances are he's making these childish statements without approval from his managers. All you need to go is up the chain, and I'm sure they will deal very harshly with this loose cannon!